Office 365 - Planner App

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It is great that we can use office 365, but I encounter the following issue when trying to use the Planer app. In order to use this app to track tasks one needs to add a new plan which appears to be not possible as a student (see screenshot).

It would be awesome if someone of your group could look into this. I am happy to provide additional information if need and available for a debugging session in case this would help.