I too am having problems verifying the DNS on shopify with facebook. Theres a 72hour period waiting period noted to wait for it to sink in. Tutorial video shows its immediate, thats frustrating when I tried to verify this for the last 30 days. I ran a few ads though on my ads manager and it went through and paid good money for it. The ads weren’t showing on the facebook page feed. Thats another tutorial. We are within the service area for facebook but not instagram. Does any of these could have been the problem? Any assistance is appreciate it,