You can still show external images, but you don't need to put the tags around it. As long as the link is direct (ends in .jpg) it'll work
For example
https://i.ibb.co/dQVD6NF/IMG-5617.jpg
gives
More details/update notes here https://invisioncommunity.com/release-notes/452-r94/
Will lock this now as it seems we're ending up with two threads about bugs - please add any bugs here:
https://www.basschat.co.uk/topic/452511-site-update-220721-bug-hunt/
Yes all externally hosted images/bbcode has been dropped apparently. Just upload directly instead or drop the direct link in without the tags which works too.
Do you mean you have tried since update? It seems BBcode has been depreciated in this version. Do you have externally hosted pics pre update, do they show correctly?
Search index is currently updating, and caching will mean that some things take a while to filter through on your system.
The feed issue should be OK now, also the 'new content' can be viewed through the 'fluid' home page setting, if you choose it
Supporting Member status is for people with a £20 sub at the moment, the problem is that it's associated with a purchase which is time limited, so adding it for a donation begs the equation how long should it remain for, if you see what I mean.
It should default to the new theme but if not make sure this is selected at the bottom of the site. We're working on a dark theme but it takes agggggess to do something as simple as that because Invision don't tell you what any of the buttons/areas are actually called!