Hello Thanasis
Welcome to the SBB Community. We are customer support page run by volunteering travel expert, we are not the SBB Customer Service.
We do not have access to your customer account and cannot answer questions related to it.
Please contact SBB by phone (0848 44 66 88 / CHF 0.08/Min, waiting times are possible) or contact SBB by chat (see at the bottom page):
https://www.sbb.ch/en/help-and-contact.html
Kind regards,
Roland