1.28 is not working
We've identified the problem on your site. Because you have chosen 'Shop Worker' as the minimum user role who can use Create Customer on Order - you then need to update the 'User Role Hierarchy' setting, so that our plugin is aware of your custom user role 'Shop Worker'.
If you add 'shop', like we did in the screenshot, then all should work as it used to.
We have made this change for you, so it should be working already.
Yes it is a new feature, and we have omitted putting it in the Changelog, like we do with all the other features.
You have always been able to choose the 'Minimum User Role'. The new setting we added was the 'User Role Hierarchy' so that if you have added your own custom user roles - like in your case 'Shop Worker (shop)' - then we would need to know if that user is more, less or equally privileged compared to the other standard user roles - like Shop Manager, Admin, etc. Then we use this hierarchy to figure out if the current user is allowed to Create Customers, and to make sure that the current user doesn't try and create a user with a higher privilege than his own - e.g. a Shop Manager should not be able to create an Admin user.
We will add this to changelog in the next version.
Thanks for lettings us know
Apologies that it has taken us some time to find what could be causing this issue, but we used your site and we have managed to find what it is - THANKS for helping us along.
The source of the problem was with the way that we checked custom user roles - we've fixed this now so that you will be able to chose any user roles in the 'User Roles Can Create Customers' multi-select in our settings
Any user role you chose here should see the Create Customer button in future.
We're releasing this version 1.32 now.
Thanks for working with us to get this solved.