Just trying to post a clearer answer and without the bias of being insulted in a previous post ...
1. You haven't, proof is in your own posts:
Many people have pointed out that you have an MR instead of one of the MCs that you mentioned earlier.
2. Again, as many people said - having 3 players on the right (or on the left) is illegal. When you have an illegal formation, possession is automatically fixed to 20/80 to your opponents favor. This explains it all, you just don't seem to understand it and assume that nobody read your post "correctly".
You've played the whole match, all 90 minutes with an illegal formation and yes - that causes the possession to not change from 20/80, unless your opponent switches to an illegal formation as well.
Forget about the cheats, hacks, whatever ... those are all scams.