I need some help with the operations center, I tried to install a new livery from avsim.com but the only thing the operation center show is the aircraft purchase page. It doesn't allow for more options. I can't install any livery. Not just the 777 but the 737 or the j41. I deleted the ops center and reinstalled and the ops center still have the same thing. If anyone can help I will appreciate.

On the left side of the Ops Center screen you should see a blue tab that says "Please select a product".  Click on that, then select the aircraft of your choice for instance PMDG 777.   Once you select an aircraft, below that blue tab on the left you'll see Livery Manager listed.  Click on that and you should be ready to make some installs.

I see the blue tap but when I select the aircraft type the only thing the comes is the page that says if you want to buy the aircraft. So there is no way to get to the livery installation. Even if I select the 777 or the 737 or the j41 is all the same.