Oh sorry, my mistake - i can edit not all posts in this thread, but posts which are older than that one:
Which is 30 days
So there must be some time-limit for edits 
This is bad for tutorials… 
Maybe it’s some TL2 limit and i need to gain TL3 first… 
@Kresimir you’re my personal expert on TL matter, was there something like edit time-limits in there?