When it works it’s ok
1. I tried to change the email address for the account but it just said incorrect email. Crazy.
2. Then I tried to delete the sharing with another email account - that seemed to delete some important functions without warning.
3. I tried to edit the nickname for the location but it wanted me to add a county and then said the location couldn’t be added as it was already in use - I was editing the nickname not adding a location.
The user interface for the account is so full of bugs that none of it is now working on my phone so I have deleted the app in the hope I can start again but expect I will have to call them tomorrow as the ui is so opaque it’s impossible to know what to do to achieve your aims.