Unable to sync new iPhone

Operating system

iOS

Joplin version

13.0.6

Desktop version info

Not related to desktop apps; they work fine

Sync target

Joplin Cloud

What issue do you have?

I have a new iphone and I have installed Joplin fresh from the app store. I set my synchronization config to Joplin Cloud and it sends me to the website to authorize, which works successfully. Then I get an orange banner at the top of the screen saying, Press to set the encryption password. I tap it and it takes me to the Encryption Config screen which says, Master password: Loaded, and gives me no option to enter or change anything.

Sync fails, saying "Could not encrypt item ... Master key is not loaded."