Share data in datamart to Power Bi Pro users

I have a Power BI Premium Per User (PPU) licence and created a datasource in datamart. I also created a report based on that datasource in the datamart.

Now I want to share e reports to the users inside different departments of our company. These users all have Power Bi Pro licences.

Unfortunately the Prewiev version of datamart does not allow Power BI pro users to read the data from a datamart created by a user with PPU licence.

So what we need is that users with Power Bi Pro licence at least can read the data of the datamart - to use the reports I created this is my idea / request.

Thanks.