STiNE log in Issue

I have been trying to log in to my STiNE account to pay my SoSe fee. However, I am asked for 2FA. I did not receive any codes. Also, I am not able to log in despite entering the correct Password. Kindly help me resolve this issue.
Thank you

Dear Atoholiswu,

Please contact the RRZ at https://www.stine.uni-hamburg.de/scrip ... ,-Akontakt

Information about the semester contribution can be found at the following website, too.
https://www.uni-hamburg.de/en/campuscen ... itrag.html

Best regards,
BK