You can only patch things up so many times, right? My first thought is that for forums you could go with something like, Pro Boards.
https://www.proboards.com/I don't know the business details, but I assume they take most of the advertising money in exchange for hosting? It has been a solid website for the
Supers! Revised RPG forums since 2014 or so.
The downside is that you lose all the cool threads; the ideas exchanged and suggestions that build up on a forum over the years. For example, there are a TON of character builds for Marvel, DC, and lesser known comic books on the Supers! Revised board and it would hurt to see all that go away if they ever switched to another host.
I don't know how much, if anything, could be moved if a switch was made -but if it needs to happen then ripping off the band-aid is probably the way to do it.