Hello,
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I'd suggest you sign in the Microsoft Partner Center first. If your developer account is staill usable, you should be able to find your app in the Dashboard.
If you still can't get the data you want. You could open a free support ticket here: Contact Us. Go to Contact us, find Non-Technical Support - Dashboard and choose CHAT NOW or SUBMIT AN INCIDENT. You could talk to the store team directly and check this.
Thank you.
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