Yellow light on Ring Bridge?

My Ring Bridge's WiFi light is always blue. Whatever the other light is, is Yellow for days, then off for days. Either way it seems to work perfectly (though the only other Ring device I have is a Mailbox Sensor). It's got an icon that suggests a signal; disabling Amazon Sidewalk did not affect it, so I think that's not it. **What does that light mean, please?** The [Ring Bridge Manual](https://support.ring.com/hc/en-us/article_attachments/360044079071/Ring_Smart_Lighting_Bridge_Manual_EN.pdf) is no help, it's almost completley empty of information.