1xBet Registration Bonus Not Working - Support Cannot Explain Issue

Thank you, 1xBet, for the bonus after registration, but that’s where my gratitude ends because I can’t use it. This is something new: I registered a totally new account on the 1xBet app on 21th November, and the funny thing is that customer support cannot explain to me what’s wrong. My account is elifw***@gmail.com and I hope to find some help here.