FamPay Account Blocked Due to Unusual Activity Detected Error

I use the FamPay application on my Android Realme 12+ 5G device. On 18 October, I started getting an “Unusual Activity Detected” message when trying to log in, and since then I have not been able to access my FamPay account at all. Because of this warning I am completely blocked from logging in and cannot use my account or any services linked to it. The message only directs me to contact support but does not clearly explain what the unusual activity is or how I can fix it. I request that the unusual activity block on my FamPay account be checked and removed as soon as possible, and that my access be restored. I also want a clear explanation of why this warning appeared on my account and what I should do to prevent it in the future.