Cannot change source control

I have a project which has been building for year connected to BitBucket.
However we have now moved out repository to Azure DevOps
How to I update the Unity Cloud source control.
Whenever I click the “Edit Source Control” button, it only allows me to select another branch in BitBucket

I have now resolved this issue.
I had renamed the original repo, so it couldn’t connect to it - which stopped me from changing it

However this has now raised another issue…
I am now unable to build as it will not Auto Detect the Unity Version