I tried to add 10,000 zGold to my account using Paypal and upon returning to the zVault page (from Paypal) I was logged out. I logged back in, and got a "Top Up Failed" warning. I tried again, and everything worked. Just figured I'd mention it for future users. Also, it'd be great to save Paypal details like Riot and Steam do, that way I can just click "Buy" without having to log back into Paypal all the time.