I am on the Basic plan and can only have two devices synced on the app.
Every time I try logging in on my new iPhone the same screen pops up where I need to go through the process of removing one of my now 3 devices - laptop, old iPhone, new iPhone. I remove the old one, confirm, refresh, and the device is back. It won't go away.
I've logged out from my old phone, even deleted the app from the device. I've tried revoking it from the web. Nothing seems to work and so either only my new iPhone or my laptop can be logged in at one time.