Why is my Google | TP-Link® OnHub Router not working?

TP-Link is aware that Google recently identified an issue with its Google Accounts engine which may impact Google | TP-Link OnHub routers (model no. TGR1900). This issue may cause Google | TP-Link OnHub routers to automatically reset to its default factory settings. If your Google | TP-Link OnHub router encounters this issue, you will need to set up your Wi-Fi network again using the Google Wi-Fi app. 

For owners of affected devices, Google has issued a statement and provided instructions to address this issue. 

For further questions or concerns regarding your TP-Link product, please contact TP-Link Support: http://www.tp-link.com/support.

Thank you.