Database Migration from legacy app on old iPad

I recently replaced my old iPad 2 (2011 - iOS 9) with a new iPad 10,2" (iOS 14). I personally made the migration between the two iPad and everything worked quite well. Everything but ONE APP. This app, called Anamnesis, reported "*the app is not compatible with this iOS version*". I wrote to the app developer (www.fuze.cc) which is not answering. I wrote to each member of the Fuze team and only one answered me (Icaro) who is no more working on Fuze, unfortunately. I'm quite desperated because I strongly need this app to work: I use Anamnesis to register each patient I see everyday. I have about 1000 records in that Anamnesis database, which is stored locally in the old iPad. There's no option in Anamnesis to export the database into a new one. There's no option to migrate it with a cloud service. I don't know what to do to make use of that database into the new iPad or to transfer that data into a new database which I can use into an app compatible with the new iPad. I'm writing an webapp with Zoho Creator, so one day that I will have the database I can slightly control the migration. But actually, I don't know what to do. This is a screenshot of Anamnesis taken in the old iPad: