Thanks for reaching out about adding beta testers via a Publishable URL.
I’m afraid that we have a temporary hold on all Publishable URL/beta requests for users outside the account of the app. As we’re not able to issue Publishable URL requests at this time, it is required that you will need to have your app reviewed and approved by our Marketplace team in order to test with any additional users outside of our account.
If you need to test with additional users under your own account in the meantime, you can still do so locally using the Local Test URL from your app. You might consider adding certain external individuals to your development account temporarily, so that they can use the local test/publishable url for testing purposes.
That said, we realize the impact this has on your ability to easily test with individuals outside your account, and do sincerely apologize that we can’t currently issue a sharable/publishable URL for draft apps at this time. Our team is hoping to solve for this in the near future.