Thanks for replying.
When using “auto” it seems to append it to the whole domain, because the error shows this:
?Error: Unable to put object (S3Compatible::putObject(): [6] Could not resolve host: static.example.com.auto).
In the “Bucket” and “Replace site’s hostname with” fields, I am using statc.example.com, which points to c.storage.googleapis.com (per GCP docs.) This is how I do it with AWS S3 buckets, but maybe this isn’t the correct method for GCP? Because the CNAME creation is different from AWS.
The object links using my CNAME work, and the bucket is publicly readable. The interoperability keys I made are also correct.
