Thank you for providing a solution to the problem and showing other community members useful information!

To better help you solve your problem, you can describe your needs in more detail.

To better help you with your problem, can you provide a screenshot?

When you use Invoke-WebRequest, it doesn't carry over the authentication context from Connect-PnPOnline.

To better help you solve your problem, it is recommended that you post a new thread for your new problem.

Agree with Genesh Sanap. I am checking the status of this case. Please let us know if you would like further assistance. If you have any update about this issue, please feel free to post back.

I’m checking how the things are going on about this issue. Whether the answer helps you?

It may be helpful to check the SharePoint logs for any errors or warnings related to incoming email.

I agree with Ganesh Sanap. Please kindly consider this comment as a warm follow up, I want to know if your problem has been solved. If you still have any other questions, please feel free to comment here and I'm glad to provide further support.

Sometimes, clearing the browser's cache and cookies can resolve display issues.