Please i am having exactly the same problem.
Device ID: d84b955f-bd11-3434-83e4-df4ae46d46e4
Please help de-register so that i can re -add.
Thank you for the quick response. I seemed to have made a mistake with 1 letter tho, so only one of my devices were deregistered. Could you deregister 9rn76JE2YJfHeJbCtghvEkhaV I seemed to have mistakenly typed 'm' before instead of 'rn'