Autofill not working on this site

I have tested this website and have not been able to recreate the issue, I was able to autofill, drag and drop and copy and paste the credentials into the fields.

The following steps should help to resolve the issue:

1. Open your 1Password, locate the login entry for this website and delete it from your 1Password (make sure to copy the username and password to a temporary location beforehand if you don't remember them by heart).
2. Go to the website that is not filling and complete the login fields (do not press return or click sign in).
3. Right click on the 1Password icon in your browser toolbar
4. Click 'Save Login'.
5. Select a vault, give the login a title, then click Save.
6. Revisit the website login and you should see the inline autofill menu in the fields.