Marc

You have some disabled there. The 'standard' one its referring to is one of the ones that are disabled, that have it set up to sync emails. There is one present, whether disabled or otherwise. So you need to remove that or change it

Word filters work with post content only at the present time

If you go to Commerce>Payments>Settings>Email copies, you can set up there so you get a copy of any email a customer gets. So therefore you could set up there to get a copy of the email confirming payment 🙂 

In terms of status updates, its worth pointing out these are deprecated items which will not exist in version 5. So if you are starting a new site, its probably advisable not to enable those at all.
In terms of feeds, you can create feeds of these things using the block manager. Please take a look at the following guide on this
 

If you change a price, when you save it will ask you if you want to amend it for people who are already subscribed
Same as above. However in this case, as they will not be on their first month, nothing really changes for them

This should now be resolved

Yes, that would be correct. You may find its not an issue on the next release though. Always test first

Thank you for bringing this issue to our attention! I can confirm this should be further reviewed and I have logged an internal bug report for our development team to investigate and address as necessary, in a future maintenance release.
 

We have upped that 🙂 

Disabling plugins will not change the column being present that has the issue. The only option would be to get the issue resolved or the issue removed (by removing the plugin or application that adds that item)

As mentioned above, you need to ensure your database is converted to mb4. This is shown in the support area of your admin CP, under the database section, as an issue on your site that should be addressed. Taking a look at your site, I also noted your site is considerably out of date, and should be updated to the latest release

You can set these to prune automatically from the following location
members > member settings > profile settings

Thank you for bringing this issue to our attention! I can confirm this should be further reviewed and I have logged an internal bug report for our development team to investigate and address as necessary, in a future maintenance release.
 

This has been resolved on your ticket 🙂 

These are kept permanently unless someone actively deletes them.

There is no setting for this. Its automatically added by the software

I see you have now sent us a ticket, which would indeed be the correct thing to do and we can get those updated 🙂 

When we're at the point you can upgrade to the final release, they will indeed work, yes

Before you go any further here, check the database for this column
 
Look at the table core_applications and check for app_directory

You can use -TESTINSTALL at the end of your license key, for the instance that is not public. This is a test key specifically for circumstances such as this 🙂 

Within each forums settings, on the first tab, you have "Users can see topics posted by other users?". But this would apply to everyone other than staff

When you click the menu at the side of any block, you will see the ablility to use it externally. From there you can select whether or not to use the stying

You would need to contact accounts for any account related items. Click on the contact form at the bottom and select accounts from the options provided. We can assist you at this point

No, there is nothing outside of the method you are using to do this at present. So you're not missing anything there 🙂 

This issue was resolved in our latest release of the platform. Please upgrade to resolve this, and if you see any further issues, please let us know.