Ran into an error with using ‘annarbor-cpa.com’ as a redirect after it had already been assigned as the main domain for Stefforia.
Sometimes, the redirect would work, other times would get an “ERR_SSL_PROTOCOL_ERROR”
Dev Notes: Solution after contacting IONOS was to reissue the SSL certificate for the domain redirect. In addition, I removed the 301 redirects that were set up in the sites .htaccess file.