Installed via TrollStore, can view app versions when selecting app - upon selecting, nothing happens.
Tried full reset all data and settings and restored data with iCloud backup. After reinstalling Trollstore and AppStore++ via Trollstore, I could sucessfuly downgrade apps once again, and AppStore++ asked to confirm each purchase (downgrade) with Apple ID user and pass. 2 days later, the same behaviour occurs when selecting app version, nothing happens.