Facebook groups are good for some things. I'm a member of a 3D Printer group which is really popular. However, you see the same questions being asked over and over because the format doesn't encourage research or looking for an answer.. it's just ask question, get answer, go. I wonder how long people are willing to keep that up.
It's the same with the groups on Telegram etc. People jump in, get an answer and go again. It's fine.. most people want a quick solution and don't really want to think too much but it doesn't really lead to anything at the end of the day. With forums the knowledge is stored and mostly easy to find and it's possible to learn from. When the PFK forums disappeared there must have been so much knowledge that disappeared with them.
I've fixed a few things so now you can upload big pictures and they are automatically resized for the forum so they load quickly but also click through to a full size version.
The restriction was a default on the server and the site software for reasons 2010 mentioned and I hadn't updated them.
There's a few things still to fix on the site but when you have two websites with roughly equivalent traffic (1000+ visits a day) and one makes enough money to pay for the hosting of all the sites I look after and the other one makes £0 then you can guess which one gets the attention.