I had two forums and they were being used regularly until about 6 months ago when they stopped being used abruptly and altogether. 

I thought there was something wrong with user registration and yesterday was able to test with a user, and they were successful but I believe that is because they registered a long time ago. 

Then comes the big problem. I had originally created 2 forums - body-double-seekers and hobby-jumpers but after around 2 years I noticed that the 'hobby-jumpers' one was not really used (it had 2 posts) where the other forum was regularly used until 6 months ago. 

So - I tried to remove the 'hobby-jumpers' to clean things up, but in the process ended up somehow with no forum. Now the 'Forum Slug' is 'body-double-seekers-2' because I recreated 'body-double-seekers' but it must have known the previous one - it doesn't let me erase the 2 and save. 

What can I do to get back what was lost? Where does WPforo store the forum data? How do I correct it?