I desperately need technical help and my question keeps getting hidden!

First issue I see is that smartling.com and www.smartling.com are served by Netlify, DNS records don’t appear to match the configure external DNS documentation. As in the documentation, the apex domain is pointed to the Netlify load balancer, and the www with a CNAME pointed to the netlify.app site, where currently there are 4 A records for the apex and 4 different records for the www.

Are you proxying to Netlify through Cloudfront by any chance? If so, check out [Support Guide] Why not proxy to Netlify?