Hi. After installing 3 Deco x20 network none of my 5 different types iPhones can Airprint anymore

I get as message 'busy'. I can however at that moment print via Wifi from windows laptops without any problem. 

Did already install the wifi connection of the printer new. Also restarted the modem & Deco's several times, no solution.

Also it's impossible to update my tomtom navigation, although it shows Wifi is connected. I connected the Tomtom to my neigbours Wifi: Update functioned there without any problem. My provider who lets me the Deco's can't help me. 

Does anyone know a solution?