I changed my Apple password, however I added it to my iPad and received a code on my phone which I typed into my iPad. It asked again for my password. I typed that in and get the message:
Verification Failed
an unknown error occurred
what do I do?
iPad, iPadOS 13
Some things you can try. Do you have access to another WiFi network where you can try? That has worked for several people.
Try a restart.
Restart your iPhone, iPad, or iPod touch
Try a forced restart.
If necessary
Do a backup and try a factory reset. Then restore from your backup.
Backup - Restore your device from an iCloud or iTunes backup.
Verification failed.
