Connecting drupal to google

Hi I am new to this, I have installed your module on my website. I have gone into google APIs and have created and OAuth client Id and installed it into Drupal google drive config page, where it is accepted. The problem is when I try to login it takes me to a google page to request permission i select allow access. It connects to google ok, then tries to connect to my site then i get a screen

The connection has timed out

The server at www.movimento5stellesenigallia.it is taking too long to respond.

The site could be temporarily unavailable or too busy. Try again in a few
moments.
If you are unable to load any pages, check your computer's network
connection.
If your computer or network is protected by a firewall or proxy, make sure
that Firefox is permitted to access the Web.

Also i am not too sure how to list my drive docs on my site. i have seen some instructions but get lost (like i said i am new to this and have no experience).
Could someone plase help me, i need to get my site up and running and this is holding me back.

thanks

Dan