Welcome, yeah, unfortunately there are scammers around trading activity, but not only around it. They are around us.. If you are doubting about the particular company or broker, then of course the best way for you is to try closing the account. If they don't wanna close your account and you worry about the fees for inactive account, then you should get acquainted with the rules or faq section there. Even scammers comply with the rules which are created by the regulators. They perhaps leave this information somewhere on their platform.
If there is no information at all, then just wait for their response.