Two ideas (which ADSK support may have already gone through with you):
When you right-click on the Flame App to ‘Get Info’, there’s a checkbox whether to run an app in Rosetta mode or native. See if that checkbox is checked, and try it the other way?
Second thing - you said you were prompted to install Rosetta (I just had the same thing on a new system last week - it seems in MacOS Monterey Rosetta was installed by default, but in Ventura it’s optional). There may be a way to see if it’s still installed or maybe somehow got removed?
My guess somehow that checkbox got unchecked (or the default changed). Now it’s trying to run in native mode and stumbling over something.
ADSK support isn’t entirely wrong to point you at Apple. If there’s a problem with Rosetta on your system, that is an Apple ecosystem issue. ADSK may know a little bit about it, but it’s not their domain. I agree though that becoming a beach ball between two big tech company’s support teams can be a super frustrating thing. Been there way too many times.