Re: power bi embed 'this content is not available'

Does the data source of your report use DirectQuery? In that case your might have forgotten this step:

https://azure.microsoft.com/en-gb/documentation/articles/power-bi-embedded-iframe/#data-source-connectivity-and-multi-tenancy-of-data

You need to tell PowerBI Embedded how to connect to your data source (i.e. credentials), this is not stored in the PBIX file.