Might want to wait for the hotfix to the hotfix they just released (and the subsequent hotfixes to that).
What happened last time? I used my boosts, grinded certs during double xp then unlocked many endgame certlines with all the xp I raked in?
You are in Cobalt, are you mad ? Go to US sever and then use it ! EU sever rarely have anythin' that make exp flow
Oh, last time we weren't able to play because of all the server down time during the double EXP weekend.