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Could you post some screenshots of what are you seeing?
Best regards,Mikey. I hope you found what you were looking for.
Sent from my Samsung Galaxy S7 Edge SM-G935F.
Welcome to the forums. Also, did you restore all your apps right after the factory reset? Boot into safe mode and see if you still get those pop ups. If not, it means that the culprit is some third party app that you downloaded. Tell us how it goes.