Jamkazam app crashes on startup

[MikeAimer]

Looks like it's Mojave / Catalina related. I went back to my 2009 Mac Mini running Yosemite, and it works fine. My iMac is 2013, and i was thinking of updgrading it, but that's an expensive way to fix the problem. Anyone running this successfully on a later-gen machine with Mojave or Catalina? 

....or do I have to roll back to a previous version (and what one - High Sierra, Sierra, El Capitan or Yosemite)?

Data dump from the error is at the link below:

https://app.box.com/s/kuibliarptpskuwvu4zbqjzdviq50goc

Running Sierra here on 2012 MacBook Pro and having the same issue. Cra$ng on startup.