Hello @rderafael
Thank you for your question.
It is correct, that your ticket is valid until the 12th of February at 5.00am.
You can make a refund request directly via the app or by phone on +41 (0) 848 44 66 88 (CHF 0.08/min). Please note the refund conditions for savings offers.: Ticket refunds | SBB help & contact
I wish you an excellent evening. Greetings RahelW