Hello everyone !

I purchased an interrail pass for me and one for my brother. Im supposed to have a 10 days one and my brother a 4 days one. I accidently exchanged those and he has the 10 days one. I realized my mistake when I activated them. Is it possible change the names on the passes or to use his pass for the rest of my travels ? Both passes are activated on my phone.

Thank you in advance for taking the time to answer me !

Alex