Atc communication problem

Hello Infinite Flight Support,
I am experiencing a serious ATC communication issue on the Expert Server.
Today, I spent around 2.5 hours at EGLL (London Heathrow) trying to communicate with ATC. My messages were successfully sent and appeared in the ATC message log, and I could see and hear communications between ATC and other players. Other players were receiving pushback and taxi instructions normally, but I repeatedly received no response.
Multiple controllers changed during this time, but the issue continued only for me. I tried changing aircraft, callsign/name, parking position, frequencies, restarting the game, force stopping the app, clearing cache, and checking my network, but nothing fixed it. The issue continues after takeoff with Departure ATC as well. The game prompts me to contact the active controller, but my transmissions receive no response.
My display name is Abhishek_Jadhav.
I am using an Android device and my network provider is Airtel i tried from Jio and VI also but same problem
I can provide screenshots if needed. Please investigate whether there is an issue affecting my ATC communication or connection.
Thank you.

Device: Oneplus 13
Operating system: Android 16