Itunes on Mac not working

[braintumor]

Hi all,
I got a very frustrating problem since a few days... My iTunes Match will not work on my Macbook pro anymore. Everything works fine on my iOS devices and the library is still there, but when I open my iTunes on my Mac and go to the library, all my music (that is now in the cloud) is grey and I cannot play anything except for music that I have locally on my drive.
I see the cloud symbol next to "Music" trying to sync (or whatever) but it has done so for days now and yesterday I have let it run for the entire day and nothing changed.
There is nothing wrong with my internet connection or my apple id, since i have been able to get on the itunes store and even bought some apps from the mac app store...

Anyone got tips? Much appreciated

 

[MisterMe]

...

Anyone got tips? Much appreciated

Sounds like you are not logged into your iCloud account.

 

[braintumor]

Sorry for asking, but shouldn't I be logged into icloud when I'm logged in with my apple ID in the itunes store?

If I'm completely wrong and tripping right now, how do I log into icloud in itunes?

 

[MisterMe]

It is possible for you to have multiple accounts on both or one or more accounts on one but none on the other. So the answer has to be "of course not."