Unable To Join Friend Team on Free Fire Max - Possible Hidden Restriction

I am a Free Fire player and my in‑game ID is 6937702030. Since the 19th of this month, I have been unable to join my friend’s team or invite my friend to my lobby. It feels as if my account has been blacklisted or some kind of hidden restriction or suspension has been placed on it, even though the game does not clearly show any ban notice. Because there was no visible explanation in the game, I contacted Free Fire customer support and explained that I cannot team up with my friend and that it looks like a blacklist issue. However, the only response I received was that nothing has happened to my account, while in practice I still cannot play with my friend, and the problem continues. In the complaint category, there is only an “account ban” option, so I had to choose that, but my real issue is this blacklist‑type restriction that prevents me from joining or inviting my friend. I kindly request that my account be checked in detail, any blacklist or restriction that prevents teaming up be identified and removed, and that I be allowed to play and join my friend’s team again without any limitations.