Problem with creation of users with the correct role

Hello,
I have failed to create a kibana user that can see specific dashboards and their data.
Perhaps you can tell me what I may be missing, I tried to use the existing roles in the Kibana 6.2.2 I have, and I also tried creating new roles.
The best result I got was that the user can see the dashboard, and visuals, but no data from the index.

Details:
My index is called "test1" my user is called "test1user" and my visuals and dashboard show data only from the test1 index.

I gave my "test1user" the following permissions:
roles: test1user, kibana_user, watcher_user

Thanks in advance !
JD

What roles did you give test1user? Do any of the roles have privileges for the index?

I tried a bunch of things, therefore suggest that you assume I know nothing, what do I need to provide that user to see data from the "test1" index and the visualizations for the index?

Create a role and add read/write access to the desired index to the role. Add the role to user.