Why is OAuth validation failing for our app on the apps store?

[pierreturnbull]

Hi,

In order to have our app on the Shopify Apps Store, it needs to pass some validations.

Someone from Shopify told us that an auto-validation failed for the OAuth process, as if our app did not use the OAuth process.

The problem is that our app does use the OAuth process. We don't have the choice of using it or not, API requests would not work without it, and on top of that the NodeJS framework we use ships with the OAuth process by default. I really can't see how our app does not use the OAuth process. On installation, it does redirect the user to the Shopify page that prompts them for enabling our application, which corresponds to the OAuth process.

Also, they're not giving us enough information to understand what's going wrong, and I can't figure out the problem.

This screenshot they gave us is the only information we have:

Any thought on what to look for, or how to get more information on this validation failure?