Manage multiple plans effortlessly with the new Portfolios feature in Microsoft Planner

The team i work with and I have all upgraded to Planner 3 such that we can operate under a common portfolio. Unfortunately i get a error when i try to connect any of the plans to the portfolio.

The error message begins with: "The specified delegated auth resource could not be connected to or returned an invalid response and so cannot be applied to the flow. Resource: '{"accessDefinition":{"portfolioPermissions":{"isMember":true,"isOwner":false}}," Has anyone else experienced a similar issue, or have an idea how to resolve this?

Thank you for any support or ideas.

Thank you

Cindi