Problems with the blower and adapter connection in a Seat Leon

For the blower issue, start by checking the fuse related to the blower motor to ensure it's not blown. If the fuse is fine, inspect the blower motor resistor, as it might be faulty. For the adapter connection issue, ensure the OBD-II port is clean and free of debris, and try using a different adapter to rule out a faulty device. Let me know how it goes or if you have further questions!