Turns out the default shop that gets created by Shopify is a test shop which isn't the same as a developer shop. I had to create another shop with developer and checkout extensions beta preview enabled then everything worked. I think it should be not...

I've been trying to figure out how to test the Thank-you page survey tutorial shopify has on their dev docs but this step is not working for me. I'm unable to view the currently in progress app even after installing it in my test store. When I attemp...