Cannot Create Scheduled Refresh Plan

I fought with getting this to work for a straight week.....

to schedule refresh a report, the execution account must have "system user" permissions.

the system administrator permission alone does not allow a user to schedule refresh a report.

Some other things to try:

Set the execution account in the setup of power bi to a specific user

make sure sql server has the proper permissions for that user

make sure the powerbi server cog->settings->site settings->security is giving access to that user

Make sure the user has permissions to the report. rightclick on the report -> security -> add user

Hope this works for you!