Where to buy fuel for my camp stove in Machico?

Hello! I’m arriving next week to do a backpacking trip, and headed to PR8 straight from the airport. Camping at Ponta de Sao Lourenco the first night. I know Decathlon is the popular place to buy fuel for the camp stove, but all seem to be in the direction of Funchal (the opposite direction for me). Anyone know of a store between the airport and Canical where I could buy a canister? Thanks in advance 🙏