Hey Jorge;
There may be many details involved here, so I'm guessing...
Does your project have one or two Top-Level navigation systems?
- If you have two, your device may be small enough to be a "phone" and will get the content in default phone instead of default tablet.
What's in the top-level for your project?
- This is what's shown on first launch. If you have an article as the first content in your top-level then that's what you'll see instead of a collection displayed as a browse page.
And here's a really important question... You mentioned that you published something.
- What did you publish? The Collection? The Layout Template? Both?
-- Publishing talks to a "production app" -- one that will go to a store. And it takes 3-5 minutes for publishing to finish.
-- Take a serious look at the preflight workflow. It uses either the generic DPS Preflight app that's in the store or an app you build with preflight enabled. Preflight typically takes 20-30 seconds to complete. This is much faster and creates a happier experience.
HTH -- Colin