GP mess after resent updates and current GAC matchmaking

Only fleet GP is wrong. and i doubt fleet gp is used for matchmaking. The only affected thing may be the division you locked in.

Just check this : sum all your ship GP (do not include non activated ships). compute the difference with the stat panel of your profil. Substract this difference to your total GP in this same stat panel. Result should now be equal to the GP displayed in your roster. That is your real GP