I was in a similar situation 3-4 years ago. The app store kept asking for answers to my security questions which I did not remember to have set up, ever. I went various rounds with their phone support trying answers on the phone (there are only so many reasonable answers for "Who was your first manager?") to no avail. Then I just enabled 2FA and the security questions requirement went away immediately. Back then, the whole thing smelled like a bug on their side to be honest.