Miss_B

Can you check the System Logs and post here the latest messages logged in there? Also, what was the latest change done to the forum before this happening?

You can do that with the Pages app. 
Or just blocks, where you hide content from guests and show your blocks to guests only. There is even a “Guest Signup Widget” included with the software. It may not exactly do what you want, but it is made for the purpose you ask about. 

Version 3 has not been supported for some time so I would recommend upgrading to version 4. This not only should solve your email issue but solve a plethora of potential security issues which would be in a software product that is not supported.

🍂🍁 Welcome to this week's Invision Community Insight! 🍁🍂
Thank you for checking out our weekly, round up post. I hope you have had a wonderful week. 
This week's updates from the Invision Community team are below. 🙂 
 
Current Happenings
Version Five! 🎉
Our first detailed view of version 5 is out! 
Ehren has shared the first of many blogs unpacking the exciting improvements in this new version. These visuals walk us through the new sidebar layout and new view modes for the forum index and topic pages.  🤩 
Join in the excitement! We would love to hear your thoughts too!
 

Changelog
For those that like to see what we are up to line by line, here is the changelog for the last two weeks for version 4. 
 
 

Its a managed box out of liquid web. That is why its odd that I am having issues as I have used them before without problems. I actually managed to get the site up and am progressing now. Converting everything over to InnoDB. We shall see when the next update is available if I run into the same issues, but as of now everything appears to be functioning as intended.

There's a LOT in v5: https://invisioncommunity.com/developers/devblog/

You are seraching the themes area. The one you need is the Search templates area. You can find it when clicking the Edit Html and Css button for the theme that you are using as default. 

Delete the tcw directory in applications. Delete the 3 tables it created; they will start with tcw_. Delete the corresponding records from core_sys_conf_settings and core_sys_lang_words. Probably there will be some orphaned records in other tables but nothing that will make your site be useless.
Go to support tool and rebuild the cache.
Make a backup of filed and database first just in case.

You can fix this by editing the applications/tcw/data/extensions.json file in the applications directory.
Replace the files content with:
{ "core": { "Queue": { "legacyTopicFields": "IPS\\tcw\\extensions\\core\\Queue\\legacyTopicFields" } } }  

I'll be doing a dev blog on the significant changes in how you create and edit themes in v5.

It looks indeed amazing. @Ehren is truly an artist. Well done.

It looks indeed amazing. @Ehren is truly an artist. Well done.

Ehren is a superstar, he's barely scratched the surface on what he's been working on for the past six months. I'm really excited by these new views and the sidebar mode gives a very desktop app like experience, whereas the new mobile view is truly fit for purpose and not just a squished desktop view.

This is remarkable. I love the new content scrolling feature on mobile. I'm this

close on dropping XenForo and migrating to Invision Community. 😅
Brilliant work to everyone involved. I love the new sidebar. Very cool to be able to link additional threads, forums or other features that are popular. Also, I didn't know Ehren was part of the IC Team. 😄 Good asset !

And that point is when 'you' post in it.
If you haven't posted in the topic, you see the circle.
If you have posted in the topic, you see the star.

I'd like to extend a public invitation to all IPS clients and the third-party community to celebrate the opening of the free listing of files on the Marketplace Directory of Invisioneer.org.  
https://www.invisioneer.org/marketplace/
What is the Marketplace Directory on Invisioneer.org?  
The Marketplace Directory is a free list of files by authors. Its goal is simple: a free, centralized list for you to browse third-party files.  
No files are sold or supported on the site itself. You will be redirected to the author's site for payment and support. 
You will find the Marketplace Directory to be immediately familiar:
Same categories and structure as the IPS Marketplace Same IP.Downloads app as the IPS Marketplace  Over 300+ files have already been listed in the Marketplace Directory, and we hope more will be listed as developers and themers update their files.  
Why visit Marketplace Directory?  
The Marketplace Directory will never be a perfect substitute for the IPS Marketplace, which had deep integration with the ACP and directly processed payments on behalf of clients.  
However, as soon as it became known that IPS was shutting down its Marketplace, it became clear that clients would confusingly need to go to multiple websites. Purchased 5 plugins from 5 different developers? You need to visit 5 different sites for support and payment.   
The Marketplace Directory doesn't totally solve the problem, but it's a step in the right direction.  It consolidates files by authors who wish to list together, and makes file discovery and author tracking so much easier.  There is power in collaboration, and the Marketplace Directory is a great example of the most trusted third-party developers coming together in the spirit of community.  
What is Invisioneer.org?  
Invisioneer.org is a broader project of mine to offer a suite of resources to help IPS owners and admins launch better communities - and to hopefully learn alongside you.  It's my goal to build an "ecosystem of success" around IPS owners and admins as we compete and thrive together on the modern web:
IPS helps you compete with community software Third-party developers help you compete with themes and extensions Invisioneer.org helps you compete with community strategy My goal behind Invisioneer.org is to help you compete - and win - with the "soft skills" of community management that are just as important as the technology: crafting a community strategy, leading with emotional intelligence, and leveraging best practices from disciplines like behavioral economics, psychology, sociology, and leading community consultancies. 
The Marketplace Directory is an important part of Invisioneer.org, and one component of the ecosystem of success for IPS clients to leverage.  
What do I do with my files?  
Purchases and renewals have stopped on the IPS Marketplace, and the Marketplace itself will shut down on October 30 2023 according to IPS.  
To continue receiving support and updates to your active Marketplace files, you will need to transfer your purchases' license keys directly to the author. To find the license keys for all purchases, go to My Purchases.  
Active authors have posted information on their file descriptions or in the support topic about their own support sites.  If you purchased a file from a developer who doesn't have information yet, you will need to reach out to that author.    
Official IPS Blog: https://invisioncommunity.com/news/invision-community/marketplace-the-next-steps-r1286/

That's good to know. Probably something I will look into then.

It was a community effort 😊

Thanks everyone @Miss_B fix worked for me, but everyone's comments were helpful.
@Marc Stridgen should i start another conversation about why I did not receive the password reset email?  I 'm not sure if this is a system wide problem.  My mailing address in the database was correct. 

There must be a configuration issue with the server if it's not using PHP 8.0 properly for your site. You should contact your hosting about it. There is no way to force the upgrade to start until that is fixed.

Yes, I read their reply at their other topic. In that case the OP is in very good hands. The Ips staff will sort this out for them. 

Before running SQL queries with an unexperienced administrator, I would recommend resetting your password via the software. The link to the password reset can be found by going to the login page on the front-end and clicking "Forgot your password?"
If you have email working on your community, then resetting your password will reset the lock and you can login with your new password.

Unfortunately, when logging in on your community, I am unable to reproduce this error. I would advise clearing your browser's cache as the post_key is a combination of elements which get contributed from the editor process. 
You also will want to upgrade ASAP as you are on an outdated release with security issues. 

Anything significant will be for v5. We have two code bases which have diverged significantly, so it's a fair bit of work to merge v4 code into v5. I currently do this manually with patch files.

An update on extensions