Hi Killerbaer,Short update. With the module "Core patch" i downgraded the APP and i works fine now.
since my phototan app updated to 8.10 as well I'm facing same issues. Although I'm not a fan of using older apps, for me it's more convenient than installing magisk delta, therefor I decided to give the CorePatch workaround a try.
Am using Lygisk (magisk fork) and installed LSPosed and CorePatch. When in CorePatch settings a warning is telling me that the phototan app is still on denylist and changes in CorePatch might not have an effect.
Disabled force denylist in Lygisk/Magisk and even removed the phototan app from denylist before performing a reboot.
Now I'm trying to downgrade the phototan app, but am not sure how to do this. I disabled automated updates in playstore and optimized app in corepatch, but when opening the app now it forcecloses instantly.
Would you mind guiding me on how to proceed?
Thanks in advance!
EDIT: Should have refreshed page before posting.
Regarding downgrade: Any trustworthy sites to download old apk from you'd suggest?
EDIT 2: Done and working.