I doubt it. IIRC, App Support is a persistent state Dalvik-in-a-box which shouldn’t be changed. Nobody outside Jolla seems to understand it much. I suspect reinstalling wipes Android apps & data and wrote the truth of the matter somewhere on the forums around 6 months ago.
My 10iii’s problem with this is a bit different from my XA2’s version. If Wifi is turned on when App Support is started, I never have a problem. If it isn’t, Wifi won’t work in App Support around 2 in 7 times.