Microsoft 365 features that help users manage their subscriptions, account settings, and billing information.
Hello Mike L,
Thank you for reaching out to the Microsoft Community. I'm Marisol, and I'm here to assist you.
I am sorry to hear that you are encountering an issue opening your Microsoft Project Plan 3. Did you try signing out and signing in to your account? Have you tried restarting your computer?
If the above is already done, please try accessing your purchased Project for the web by signing in to your account through this link: project.microsoft.com.
To learn more information about accessing the Project Plan you purchased, I recommend you check this link: https://support.microsoft.com/office/c19b2421-3c9d-4037-97c6-f66b6e1d2eb5
Additionally, kindly verify whether your credit card has been charged or if the transaction was completed successfully. To do this, you may need to contact your credit card support team to request for information regarding your newest bank charges.
Thank you, I hope this information proves helpful. Please let me know if you have further questions.
Best regards, Marisol D.