I just got my Magenta L Prepaid sim and its activated already. Now I am trying to port my existing mobile number from PremiumSim to this prepaid contract. But could not found any information, on how to do that. There is no option in the Magenta App and also in My Magenta web portal.

I have already cancelled my contract with Premium-Sim and ready for porting by in Telekom, could not find any form or page to do that.

Confusing is, when I fill the opt-in form, it says I need to make a new contract when porting is ready but I already got the prepaid sim contract.

Can anybody help me with this?