Your community has quite a few issues going on right now.
It has an invalid SSL certificate.
The URL you included there has www, whereas your community does not use www.
Looks like you're using a CDN on your community and it is not allowing things to load for me due to a CORs policy you're setting.
Items 1 and 2 may really be causing the issue here as the software isn't detecting the right/valid URL or may not entirely be able to get to it.
I'm afraid, this is not so. There are numerous upgrades available for applications and plugins in your ACP. You would need to track the authors of these applications/plugins down or uninstall them if you no longer wish to upgrade them.
Unfortunately, we would need this done prior to investigating further. The issue at hand was resolved so would not be an issue so we are going through proper troubleshooting steps here.
We are not asking you to uninstall but ensure all are updated to be compatible with the latest release. You should only uninstall if they are not compatible with the latest release or you do not use them.
That is exactly the error which is bringing in related third-party applications/plugins. We would need these upgraded prior to being able to move forward.
Please note that this week we are on holiday break as mentioned in the announcement at the top of the community so support responses will be delayed.
There might have been some issues yesterday. Have you tried this recently? If so, please ensure that your server is able to connect to our license server: remoteservices.invisionpower.com
As mentioned by my colleague, Future Publish is a moderator permission, not a member permission so you would need to provide your members that permission if you wish for them to see it. However, providing your whole community the ability to use this feature would likely negate it's usefulness as they would also see the future publish items.
As mentioned previously, as your ticket is awaiting management review, it will take longer than usual, I'm afraid. I have chased this up for you, however.
We will handle the rest of your request via your ticket.
I have transferred this to a ticket so we can assist you in private.
Anyone else reading this, please submit cancellation requests to our Contact Form in the Accounts department and we will promptly assist you.
403 is different than any outage error. That typically states you do not have permission. You will want to check how you're using the API and ensure you're not excessively sending requests, always including a user agent, and other typical best practices.
Please note that as it is the holidays and your ticket is rather different in nature than just a domain change, please note it will be longer than usual. I'm sorry I do not have better news for you at this time. I have responded in your ticket with a current status.
Running this as a test, I did not have any issues. My guess is that you used incorrect credentials for the Client Area login there. Please go to /admin/upgrade in the browser to finish the upgrade.
Unfortunately, the ACP credentials are invalid. Please verify and try again.
You would need to contact your hosting provider if you're having issues here.
PHP extensions would like cause errors and not be able to run the software so I don't believe that would be it.
I can take a look:
We would need to look further into this for you, however the access details on file appear to be incorrect or missing. Could you please update these details by visiting your client area, selecting the relevant purchase, then clicking "Review/Update Access Information" under the "Stored Access Information" section.
We look forward to further assisting you.
I'm afraid, there are still more applications/plugins involved. You will want to update these:
Due to the significant number of items which you have installed on the installation, it is hard for us to troubleshoot the issue here. You would need to ensure everything is up to date. If you do not use it, uninstall it.
If you open up your browser console, are you seeing any errors? My assumption is likely a server error on your end is happening here and it is unable to continue.
However, you can always perform a manual upgrade: