@damiensantamaria - by "go to Studio One" do you mean start the app or go to the Presonus web site?
I don't see a Cloud option under the Studio Menu in the app.
There isn't a "Studio One" web site.
@andreynazin, if you go to https://my.presonus.com/home and sign into your account you will see an "Exchange" menu option.
I believe that is what you are looking for.
Update: looking closer, you can also do this within Studio One (as Damien was trying to say)
1. press F5 to open Browse (if it isn't already open)
2. Click on the Cloud tab ((fourth from the left)
3. Click Sign In under Exchange