Internet Connectivity On and Off

Howdy,

Some details:

1. Today is Jan 22, 2022

2. Internet connectivity disconnects 6 - 10X per day SINCE 3 days ago (new occurrence)

3. I have ORBI RBK53 bought about 3 years ago. Name on unit is RBR50.

4. Firmware version, V2.7.3.22

5. PC running Windows 10 Home

Any thoughts on how to make the unit stable again?  Thanks.