1) What she uses now, have you seen any pic?
Yeah I have more context in that case, she use haki.
2) Officially Zoro did not have Haki either pre-TS, now we know he had it with one technique.
He had black hardening all time? He use it for one time and haki was a case in the middle of pre timeskip.
Luffy should know who has haki or not right?
And not like Zoro, Robin wasn´t able to hurt Monet, someone with haki should be able to do it right?
3) Did she use the technique she used now in Punk Hazard?
What has haki do with the technqiue, haki can be use for every technique right?
4) If she had awakened Haki now as power-up, why would Oda concentrate on something she learned during the timeskip when Usopp´s awakening of CoO was dedicated almost the entire chapter?
Because that is a fact, outside of Luffy,Zoro and Sanji no one had haki in the crew.
Do you know more then Luffy? More then Oda and the databook, editors?
If Robin had haki, why Luffy didn´t call her too? Why she didn´t hurt Monet? Couldn´t damage Monet?
Their is no point to debate this with you, it is clear that Robin didn´t have haki during punk hazard and most like DR.