Viewing Embedded Paginated Reports within the Power BI Service

Did You find a solution? I am going nuts with all these sharing problems. All reports in my situation are shared via App for read only- works! In one report there is a embedded paginated report but users cannot acces it. If a use a standalone paginated report and use it within the app - users can view both (standaolne and embedded in other main report) . If I set a direct acces for Paginated report for a user - he can view it ( but I can't share for a group as a do not see this group in report acces field)

Morover I can set a direct accces (read) to dataset to a group A of users but I can't see the same group A when I would like to share direct acces to any report. I can share an app for this group A but it does't show up in direct acces field when typing. Why I am able to share a direct acces to dataset for a group A but I can't share direct acces to report (group is not visible)??? 

When I checked datasets and reports there is an info that a dateset is shared via applicatiopn but for reports - no, no such info...even if users can viem them via app and it is shared in this way. This is extremely confusing.