Due to the parameters of Facebook, to add a custom tab, your page must have at least 2,000 followers. If it does not, you will get an error message that says "This page does not have permission to install the custom tab."
Please follow the steps below so we can assist you in adding your Auction to your Facebook page:
Step 1) Please contact our support team and provide your Facebook page link as our CAT Facebook Admin will need to like your page.
Step 2) Log in to your Facebook account and go to Settings > Page Roles.
Step 3) Scroll down to Assign a New Page Role. Then, enter Tom Kelly's name in the field, and select the Tom Kelly that matches the recent page like and assign Admin permissions. If you don't see the proper Tom Kelly you can input facebook.com/tom.kelly.129794.
Step 4) The invite will be time sensitive, therefore please confirm with our support team once this step is completed. Tom Kelly will then accept the invite and add the Auction tab on your Facebook page. When the tab is created, you may then remove Tom Kelly as the Admin from your Settings > Page Roles.