@Ramhound This is what i said when you are not comfortable with a topic you shouldn't answer but you may still want to comment one of the provided answers to learn more/ ask the authors about explanations.

So you are saying i don't need to comment but firstly to answer directly to the topic providing my own solution to the problems but i am not in confort with that, because the most of times i just need to comment to ask for further explanations, this is why i was here for a long time with no rep points at all.

Yes exactly this is what i wanted to say i can't comment on other's posts, i didn't notice i can answer because i always try to add a comment and they prevent me to do so, it is frustrating.