Pollen filter is hidden behind the glovebox from underneath, you need to get your head underneath in the passenger footwell with a torch to assist, you will need to unscrew 2 plastic screws to remove the small thin foam cover in the footwell, look for a slim plastic trim panel that slides along to the left or right iirc, then pull the filter out, reverse fitment, job done.
Get the wipers from audi & fit yourself, takes 2 minutes & assured of quality.