As much as this is a dope cheat, I'm hoping Plarium will gift me some stuff for reporting.

I noticed after my internet connection was disconnected after a battle, the option to retry sending battle result popped up. When my internet got restored I retried, battle result was posted as victory to me, but the same player was still available for me to battle again.

I thought it was one off, but I experimented again and the same result. So basically, after arena battles, if you turn off your internet while  a battle is on, the failed connection message will pop up, wait for a few seconds then turn back on the internet connection,  the battle result will be posted as a victory if you won, and the same player will be available to battle again and again with the same trick.

The screenshot below shows the battles I had multiple times with the same player. And I got medals and points for all the wins.

I hope i get some freebies for this hint Plarium.

You need to fix the loophole by the way.