First backup your private key, paste it somewhere safe. Then uninstall the current Amethyst version. Download and install this version using link below. Login!
If you need any help please let me know.
https://github.com/TonyGiorgio/amethyst-unleashed/releases/download/v0.55.2-1/amethyst-googleplay-universal-v0.55.2-1.apk
