I downloaded your Gratzio application, they sent me 3.5 XLM to my wallet, the question was what did they give me for? should they be returned? Do they always stay with me?
how to contact technical support, wrote to them but they are silent
You borrowed those tokens when you opened the account. The term to return 3.5 XLM was 7 days. If you didn't pay them back yet your wallet was probably deactivated. You can reactivate your wallet any time by logging in with your credentials and borrow again. Once you borrow you have to fund your account with 3.5 XLM in 7 days and the funds will be automatically deducted from your account activating it permanently.