MacOS El Capitan - Unable to use Rekord Buddy

I’ve read most of these threads regarding the MacOS El Capitan 10.11.6 not being able to use the newest Rekord Buddy update.

I have been a paying customer since Rekord Buddy first came out and now I can’t even use it?

I’ve seen this link posted to use for my system and it’s broken? -

I need help asap as I have gigs on the weekend and thought everything would be fine and yet here we are.

PS. I am unable to even update my Mac OS any further than El Capitan 10.11.6

If the link could work then at least I’d be able to download the correct version needed.