i am using pipepipe right now and it works just fine. you probably need an update. if pipepipe is bugged, check the bug reports on the github. I'd bet someone has reported it already.

i have both pipepipe and newpipe installed, but I feel that pipepipe actually tends to be a bit better about actually fixing bugs (not related to youtube connection issues. things like UI issues, etc.)

if neither work well when updated, freetube has an android version you can always try.