Are you asking for the club to give you your player's card or for the club to release your player so he can be carded under a different team? The first is to the discretion of the club and the club would be on the hook for your player. The club doesn't have to give you the player card if it doesn't want to if you want your player to be carded under that club. For the second, the club is required to release your player as long as you are paid up. You'd then be free to have your player carded with a new club.
If you are seeking a release from the club, the club ultimately needs to be involved in the release and MSYSA will look to the club for the ok and to submit the release form. But, assuming you have completed your portion of the release form (
https://www.msysa.org/assets/69/6/Player-Team_Status_Form_2020_-_REVISED_ver._A.pdf) and the club has been non-responsive, I'd send the form to
registration@msysa.org, cc the club and note the club hasn't responded to you. Again, if you are paid up to the club, they have to release the card.