http://nowherejezfoltodf4jiyl6r56jnzintap5vyjlia7fkirfsnfizflqd.onion/howtos/index.html
If you want to top up your account, your account page will display another monero address, where you will be able to add more time to your account. [How to use MoneroSSO] First go to the MoneroSSO onion URL using the tor browser, at http://4o4sum57qjta773vn6h7dxgdyuwstcmgqpegewhfzr7m6bh2igsrceqd.onion/ Then as you can see, if you want to sign up, you need to send some monero to the sign-up XMR address.