I'm sorry you haven't snagged a FP+ for them. The only thing I know to suggest is to keep trying. When did your FP+ window open? Maybe if you start checking diligently at 45 days out, people will have canceled their packages?
Who knows...they may be doing the "SB+" thing, where they only let the standby line get so long before they start issuing cards with return times to come back and get in the standby line. I know that's been a failure on Soarin', but don't know how it worked for A&E.