Fill up AdBlue

Hello together, I have a question to fill up the AdBlue. Basically I know how to do it and I’ve done it a lot already. But with my Karoq the stuff just doesn’t want to flow properly into the tank. It gets stuck in the filler nozzle, then it glows and bubbles and man really hears how the stuff is running very slowly. Obviously a problem with the venting. I know that there were extra fillers with venting for the first Audi models at that time. m Karoq too ? I have MJ 2019 To refuel 5 liters of AdBlue via canister I need about 10 min because of the whole waiting time to rerun. And there is always something up there. Do you have a similar problem?