Please just spend the extra $20 to book with the airline.
Flying home from Dublin back to the US. The airline suddenly cancelled my flight and I was assigned a flight the next day, messing up my travel plans. I went to the airline (WestJet) and asked if there was any possible way to get a refund for my missed connections and a hotel waiver for my extra day, where they said that they normally, would give me $250 CAD, but because it was booked with a travel agency(Budget Air), it was up to Budget Air to accommodate. After calling Budget Air, I was told that there was “nothing they could do” to provide for the connections and the hotel, and that I would have to pay the extra costs. I’m grateful that I still have a way home(albeit with extra travel costs) but please, just spend the extra money to book directly with the airline. You’ll be glad you did when things go wrong.