I'll try not be a douchebag...
First thing you should consider is to open it up and make sure all components are not only dry but clean of any residue, but that can be skipped if you wish
Do a factory rest, this time when signing in don't tell it to sync, rather manually change your settings, this sort of issue shouldn't have happened and I never heard of this happening but there is always something new,
Best of luck
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