Thanks for your answer!
I´ve looked at the suggested episodes (I´m also a pro user) and I tried to smash, mobilize my calfs, quads, IT band. But it didn´t change much (it was better for a short periode of time, but with practice and working out, pain reoccured…)
I have seen a manual therapist and he said that all the problems originate in my back/hip. He especially pointed out that I need to stretch my iliopsoas and put some heat on my stomache as often as possible.
So I guess I need to work on my butt, QL, psoas, illiacus?! What do you think? Can I do any harm, smashing my psoas too often (that´s what he said)?