That's a hard question to answer without being there to actually see the situation. That said, leaks in travel trailers are notoriously hard to track down. What looks like a roof leak may actually be a leak in the sidewall or around a window frame. Water can travel quite a distance horizontally as well as vertically.
Having dealt with a few leaks back in my travel trailer days, I suspect that you still have one and the water is just not coming from the roof area where you recently had work done. There is another possibility as well; that the roof work missed a spot (around a vent, perhaps, or air conditioner). It only takes a tiny leak to let what appears to be a substantial quantity of water in.
Wishing you good luck in running this issue down.
TJ