Bringing a 6 year old app back to life again

Greetings I am looking for assistance from anyone to please help me bring back an old app (6 years) old to life again.   Any help will be appreciated.   So version 8.18.99 will have to be loaded first and then the programme tweaked to show a later version. End goal is to use this software as a PWA and as a MVP for potentially a new business.   My eMail is or mobile +27 66 243 1618  
1 answers

That messages means that you need to open it in an Mx model in those ranges. Currently 8.18.9  is the latest Mx8 line. So download it from the marketplace here:

Install that version and then try to open that project.