Onion service redirects to HTTPS

My onion address automatically redirects to HTTPS

I tested it with multiple browsers (desktop or mobile) it is the same.
Tried to restart everything (onionbalance, tor backend instances) to see if I could fix this, but no success.

In the past 30 days, multiple DDoS attacks hit my onion service. Multiple attackers tried to take me down, and I managed to stay online. But this time, I can’t figure out what they are doing
I have multiple onion addresses all are fine and the only one that they are attacking redirect to HTTPS