I had the same leak in the passengers footwell, I rebonded the lower strip on to the horrible nordglass windscreen and it still was not a success, in the end I made a cover from a rubber floor mat and attached it to the metal scuttle panel above the pollen filter with some rivets through the existing holes and some washers on the inside, it has been dry as a bone since then, I replaced the carpet with one from a much lower mileage car and now I have no more wet dog smell and no more condensation inside the car. I’ll be getting a brand new genuine Audi screen fitted soon