Roadmap / User can't connect to own MS Project Online project / Invalid app connection for flow

[CuriousProjectUser]

Dear all,

we're having an issue with a roadmap where a user cannot connect to a project in MS Project Online where she is the owner.

The project can be selected, but once she is about to confirm the connection, she gets the information that for both Apps required by the flow ("Project Roadmap" and "Project Online") the connection is invalid. Compare also screenshot.

Roadmap feature is globally enabled and the user has a Microsoft Project Plan 3 license assigned, and also a Microsoft Project Plan 1 which is probably redundant.

Anybody experienced something similar?

[#2 · Accepted solution]

Clicking in the screenshot above on "add new connection" solved the issue. After re-entering the user-credentials connections to other projects could be added without any issue.

[#3]

@CuriousProjectUser 

I've a New Premium Planner derived  plan that road map keeps losing connection to, saying "The connection to Project needs attention."
I keep reconnecting...