Try D-76, or or Perceptol for HP5+, I did develop HP5+ few times with D-76 and got nice results even it is not my developer of choice, it wasn't contrast roll, but was little grainy which is fine for me, at least i got something good to use.

Don't give up on one or 2 rolls, i was so quick judging many rolls from beginning but later one i found out that any B&W roll can give nice decent results if you understand it and the process you gonna use with it.