I suggested the possibility that perhaps the roof membrane came loose first and flapped the Winegard unit loose. I didn't suggest this as a means of assigning guilt, starting an argument, or inducing doubt in the OP, or anything else like that. IMO, the most logical course for the OP is to try for a warranty repair.
The reason I suggested a possible alternative scenario, and why the exact nature of what happened might matter, is so that others with similar RVs (ahem .. ME!) would inspect the right thing. I inspected both on my RV earlier today. My Winegard Connect 2.0 is mounted at a very similar location to the OPs. Fortunately, both it and the roof membrane appear to be solidly attached.
I do hope the OP can get a satisfactory resolution on the repair, and hopefully still get to take that trip! What a way to start out ... I wish the OP only the best for the future.
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2021 Thor Four Winds 26B on Chevy 4500
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