White and green whispers Evo

I cannot use my (white and green whispers) in-progress evo thunderstruck fernando hierro (who was previously evo'ed in "the president" evo) in any game mode... i tried rush and rivals and everytime it logs me out of ultimate team and says it's a server connection error, while then i tried to play without him in the squad and i had no problem. i can't finish my evo like this.