Unstaking HBAR from Stader

Hello everyone.

I staked all of my HBAR on Stader almost a year ago. I am trying to unstake my HBAR, but it just says "you don't have enough HBAR". I have a lot of HBAR there (HBARX), and even tried to remove the transaction fee amount from the unstaking field. I have also tried to disconnect and reconnect my Hashpack Wallet. I am getting a bit worried that there is no way for me to unstake my HBAR. Any help would be greatly appreciated.