can't access iTunes store from my Mac
I have OS X 10.10.4 and iTunes version 12.2.1.16
I get a screen with "iTunes Store" in the centre when I click the iTunes Store tab at the top of the screen - that's it.
and I am signed in to my account.
Help, please
iMac with Retina 5K display, OS X Yosemite (10.10.4)