Free Fire MM9 Matchmaking Error Prevents Me From Playing

I am having a serious problem while trying to play Garena Free Fire on my Android device with my Facebook-linked account. Every time I try to enter a match, an error window appears on the screen that says: “ERROR – Corresponding player pool not found. Matchmaking failed. (MM9)”. Because of this MM9 error, I am completely unable to join any matches and cannot play the game at all. My Free Fire account is linked with the Facebook account that uses the email address enzillreang**@gmail.com. I am also unable to receive the OTP needed for the Facebook link and this prevents me from properly accessing and securing my game account. I request that my account connected through Facebook be checked in detail, that the MM9 matchmaking problem be fixed so that I can normally enter matches again, and that the OTP issue for my Facebook link be resolved. I also request clear information about the reason for these issues and what was done to solve them.