I'm trying for several month to pass authentification on my phone !!
Not match my master password...
I try : uninstall the app, disconnect from google drive, delete the files on my phone .... Not working.
(My master password is OK my computer.)
I found the solution : go to informations (preferences/application) clear cache information.
Relaunch the app and folow the step until restaure my data -> google drive !
Bye