There's currently a bug with epic accounts not being able to crew with... other accounts. (not sure on epic to epic?)One pips is a lot in combat.
And why only in PG? It's a bug or something?
Anyway, you can get around it by using the crew search function - you dont NEED to be in a private group to do it, it just makes it easier, as you and the other account will definitely be the only ones looking to crew up, works in open though, I managed it with three accounts all in a crew (two frontier, one epic)
This is from open.