Top printer but difficult to set up Wi-Fi

Printer installed locally, no problem. The printer does what it should and the correspondingly good for this price range. Per network cable directly to the router also works perfectly. A star deduction for the wireless device to the printer that has proved difficult. The manual has not really helped me. If no wireless connection is established, repeat point xy. Connection via Infrastructure has until now not working. More than one time out did not take place. Normally select network and enter the network key and it should work. Fixed IP address did not help either. The trick is saving the WPS quick connection. Pin the printer in the router (at my Fritz box 7270) to enter, start WPS on printers and routers. And it works but printing via WLAN!
The printer is for 3 weeks in operation and would have earned 5 stars if the trouble with the wireless connection would not have been. In the end everything was great and recommended.