I found a loophole.
You can get into accounts to download if you are logged into another account.
I luckily fig. this out. You already have only one account. Just sign up for another & go to the full PB that is locked.
It will work if you are logged in already in another account to download anything you want or need except gifs or vids.
Just click on download album & it should work fine with reg. images.
I think that's the easiest way to explain it.