I’m trying to create a Shopify app and getting one of two errors. On one machine I get

redirect_url and application url must have matching hosts.

On the other I get

redirect_uri is not whitelisted

In shopify I’ve verified my URLs several times

Application URL

https://myapplication.domain.com/shopify

Allowed redirection URLs

https://myapplication.domain.com/shopify/install.php

https://myapplication.domain.com/shopify/get_token.php

https://myapplication.domain.com

• I’ve tried with and without trailing slashes on the Application URL
  • No change in behavior
• I’ve tried removing the https:// from the front
  • This complains of a bad URL
• I’ve confirmed no typos in the URLs
• The errors don’t change on the 2 machines on each attempt to update the code.

How do I start troubleshooting or what additional info can I provide?