We found on cruises that did not show up in the app you could go to the specific ship, as AshleyDillo said, and the cruise was there. It took the next day before our cruise properly appeared but we had the workaround.
I'm having this same issue and it's so frustrating. I reached out to RC on Twitter, and they told me (just like what @AshleyDillonoted above), it's not recognizing the interporting. They assured me it would be ready to go by 30 days prior to our sailing. In the meantime, I just keep checking from my laptop for check-in.
I received a pre-cruise survey this week for my upcoming trip on Wonder of the Seas. It was a normal survey, asking about my traveling party and how many times we have previously cruised. At the end of the survey it asked if my two teenagers would be interested in future surveys about teams and cruising. We answered yes and thought nothing of it.
To my surprise, I received an email this morning asking if my two teenagers would be willing to have a group visit with the head of product development of Royal Caribbean while on our trip. For the hour spent, Royal Caribbean would provide each of them $100 onboard credit. I am thinking about lying about my age in the future. . .