The first thing I would do is take it up with your dealer. It does appear to be a fault in the EVSE, so the fix should be obvious. Even if they are not prepared to swap for a new one under warranty, then you have a case documented. If it causes a later problem with the port, then you are covered for that as well.I use the included EVSE daily and it is difficult to insert and remove and isn’t getting any easier. Looking at it, I don’t see anything obvious that could be causing this. Removing it is usually harder than inserting it.
I’ve used several charging stations, as well as my father’s EVSE, which came with his 2013 Volt and they all go on much smoother and come off easier.
Anyone else that uses theirs regularly experiencing the same thing?