OK, I think I do not need to set a sample content and neither will be able to unless I can change some more settings on the site/account (language).
Now, I think I saw the mistake in your setup. It's something simple I think.
1. In the Form you do you to edit the user, you have set the "Role of the user:" to Administrator and Subscriber.
Nothing else shall be edited with this Form, right?
2. In Access, you have set this Form to be edited by a row of User Roles, which to me actually seem you try to give each user a role (I am not sure about the purpose of this, as usually you will have many users in a role but just one role for many users, not a role each user).
2. However, I could not find "Subscriber" to be allowed to use that form in Access settings, and that is the ONLY role other than Administrators involved in this Form.
So, I see here 2 problems of which one is maybe my misunderstanding and the other is the setting I speak about above.
If you want Subscribers to be able to use that form you have to set it so in the Forms access settings.
Same, if you want any of the other roles, you need to set the form (and access) for them.
Now to the other issue which is maybe my misunderstanding.
Can I ask, why you have many user ROLES, which seem to be User "names"?
That seems to me you want to have a role for EACH user on your site? This will get a lot of things to "check" and set.
I might suggest to add single users with the "+" icon in Access or, to create less Roles, but assign more users to the roles?
I am not sure, there are scenarios where your setup makes sense, so I need to ask if you require this, or if it is a product of as lack in our GUI (Graphical User Interface) which did make you miss the detail I explain above?
Thanks!