Hello Omid
In order to exactly understand your issue, it is important that you use the right product terms.
A Swiss Card does not exist yet the SwissPass which is for residents, the Swiss Travel Pass, or the Swiss Half Fare Card for example.
I assume you are using the Swiss Half Fare Card. Your question is frequently asked, and it is not difficult to find the answer.
As a first step, simply create a user login following this link, and choose no customer number. Then, you can download the SBB Mobile app and login with the account you created before.
https://www.swisspass.ch/register/1?lang=en
Then, follow the instructions I have given in this reply:
https://community.sbb.ch/d/26418-how-can-i-save-the-info-of-swiss-half-fare-card
Let us know if you need more help, or you are using another product than the Swiss Half Fare Card.
Kind regards,
Roland