Unable to Access My 5-Year-Old Garena Free Fire Account via Facebook Login

I’ve been using my Garena Free Fire account for five years, and it's linked to my personal Facebook account. However, when I try to log in through Facebook, it creates a new account instead of accessing my existing one. I have put in so much time and effort over the years, and I don’t want it to go to waste due to this issue. This problem seems to be caused by changes on your end, and I’m urgently requesting you to resolve it. If this isn’t fixed, I will consider taking legal action. Please address this situation immediately, as I cannot afford to lose all my progress.