Magento 1.9.3.10

I thought I'd done everything correctly, but something isn't working.

All I want to do is move the domain I used on a staging Magento to a Live Magento.

I created the new Website/Store View and categories in the Live Magento, enabled it and disabled the Store View in the Staging Magento.

I removed the DNS I thought I'd put in to point the domain at the Staging Magento.

I then added the domain name into the System > Config > General > Web > Un/Secure fields in the Live Magento, did a full re-index and Cache dump.

I'm getting "The web page at \*\*\*\*\*\* might be temporarily down or it may have moved permanently to a new web address."

What have I missed?