Why my windows 11 keeps asking activation key??

I was using a genuine version of windows 10 and after upgrading to windows 11 it keeps asking activation keys. Iam using intel i7 10th gen processor. Any time a pop up window comes and ask me to activate windows and when i open it it shows your window is activated. It is realy frustrated 😠 ive tried to contact customer service but they never responded. Can any one tell me what should i do.