Royal Match iPhone Chat Not Working, Messages Not Visible

I am a Royal Match player on iPhone and I have a problem with the in‑game chat. After a message I sent in the game, I noticed that nobody seems to see my messages anymore. I can write in chat, but it looks like my messages are either not visible to others or somehow ignored by the system. I do not know much about technical details, but I am worried that my account or chat might be restricted without any clear reason or notice. I have not contacted support about this issue before, because I am not sure what exactly is wrong or how to explain it properly. I kindly ask you to check my account and chat status, let me know if there is any restriction on my chats, and, if possible, make my messages visible to other players again. I would also appreciate a clear explanation of what caused this situation and what I should pay attention to in the future.