What’s with the interior fan?

Hello to the round, has you ever had a problem with the interior fan? My (OZL 2020 177PS Diesel) has been quite noisy for a few days. I’ve already found out that the fan is sitting on the passenger side behind the glove compartment. It can be seen through the ventilation grid below the windscreen. Does anyone know how to get there as easily as possible? Maybe a leaf has caught in it? Greetings…