-- UPDATE–
The issue has been resolved
Hello, today we noticed that Shopify has moved the Partner Dashboard to the Dev dashboard as announced here Manage payouts, billing, and settings in Dev Dashboard
Currently, I cannot access the old partner dashboard interface; it redirects to the dev dashboard. In the dev dashboard interface, there is no Themes section at all, so I cannot submit themes, update themes, or view the stores that have purchased from us
Please check this issue