@AjmatRijon Can I have some screenshots about the tick icon color?

@Theferret Please check the QoS settings on the AX50, or you can follow the guide to disable it: https://www.tp-link.com/support/faq/3069/ If this doesn't help, you can also try to reset the router...

@Fuzzyscribble That could be the device that logged into the router at the moment, you can confirm.

@Maru86 Can we confirm who is your ISP, and what is the WAN connection type on the WR820N? Will the internet LED on the router change to be orange when the internet disconnects? Please login to the...

@SebastianJ Before you upgrade your Windows system to Windows 11, does the Printer Controller work fine? If that's the case, I guess the controller may not be compatible with the latest Windows 11....

@Rabeet Does this issue happen regularly around 11 am-2 pm everyday? Who is your ISP? I would suggest connecting a PC directly to the ISP modem via Ethernet bypassing the router and determine if you...