[Reported] 3XP for every PVP fight

Platform, device version and operating system: android

Screenshot or image:

What you were expecting to happen, and what actually happened:

My level bar wad full. I expected it to increase. For a good 20-30 minutes of pvp fights the bar was full. Its not increasing level

How often does this happen? When did it begin happening?
This is the first time ive had this issue but now it happens every fight.

Steps to make it happen again
Fight a battle. Xp bar doesnt increase. Stays full