Can't play online on steam

Jun 30, 2018
2
0
10
Since yesterday I can't play online, the first problem is that my friends doesn't see that I have bought the game, although they see I'm online. The second is when I'm in a game, I can't use join via steam, and when I click it nothing happens. Sorry I posted this on windows...
 
Jun 30, 2018
2
0
10

I do have Windows 10, but I thought that windows a topic was for windows problems like kernel problems.