I was having problems with the sync between my browser (MS Edge with Chrome extension) and iPhone. I removed the iPhone from my account and deleted the app from it. However, the dashboard is still showing 2 of 2 paired devices but only one is in the list (see screenshot). I cannot re-pair the iPhone.
If you click on “remove” on the device that is already paired, you should be able to add a new device again.
let me know if that works!
Why do you want to re-sync in general? Did you have issues with the initial sync?