GGPoker now allows trackers like HM3?

Hard to say when I have zero idea what you mean by allowing trackers? They have never been not allowed to dl hands and import them to see your results. You can't use them while playing.

yeah u can - poker craft - , n import them to H2N or PT4 etc

also results yes - have to do it manually on SharkScope - sam thing use poker craft upload them to SS n keep ur results up to date

not sure what u mean by that

but yes cannot use a HUD while playing , or grab the hands while u play - thats always been there