BeaverBuilder: can't update Group Buy BB I have. Is there a good alternative or other group buy?

I have used Beaver Builder Theme and Pro Plugin for years via a group Agency buy. But that buyer skipped out after a few years and now I cannot update BB plugins and Theme.

I have 6 sites and cannot update any of them with the latest BB theme nor plugin.
Questions:
1) Is there another plugin like BB that I can buy cheaper to edit my BB modules etc.? Or would I have to redesign all the modules? (Don't tell me to use the free WP software; I hate it!)
2) Is there a place I can get another group buy of BB so I don't have to pay $99 for the plug in etc? Or something that I can replace it with that will not break or cause me to redesign what I already have?
3) If I install the FREE BB on each of those sites will it just replace the current BB plugin/theme I have and cause no issues? Or will that require basically re-doing the entire sites?

Seems like the easiest solution would be to continue using BB.
If I continue BB as I have them (pro) without updating will that cause issues down the line causing my sites to break? That's really why I am even thinking about updating.

Thanks for shedding any light that you can on these questions!