Hello   @QuestionLars 

thank you for the feedback, it looks like  the web UI has updated, but you could still enable WPS by pressing the WPS button (Big signal Led on RE455 )on the range extender 

• FAQ: How to setup the range extender via WPS button (new logo)?

WPS is to set up a connection between range extender and wifi router, if the wifi network device or wifi printer needs to connect to extender’s wifi network, you will need to manually connect to the Wi-Fi by putting in wifi password.

  @QuestionLars I see, thank you for the explanation. As range extender does not have this option right now,  I think you may reach printer support for help if the Wireless Printer supports connecting through Wi-Fi network. Thank you for feedback with the manual, I will check with related team and see if that need to be updated .  Have a nice day!