@Mitre Hello, sorry to hear that this adapter is no longer working with your new macOS Big Sur 11.1 system, there is currently no driver for this adapter, we are taking high priority with the chipset...

@Kelatte Do you mean the PPPoE username and password to connect to the internet? You need to get this from your Internet Service Provider, who are responsible to provide this.

@Justyna Hello, detailed issue description including the TP-Link device model as well as its hardware version will help a lot in addressing the issue, so don't hesitate to provide as more details as...

@smni Can you please describe the detailed symptom of the rebooting? How about the LEDs status? Are they all turning off then on automatically and the internet on it will temporarily down then...

@Joao_Hutner To locate this issue and try to fix it, we would like to follow up on your case via email. Please check your inbox and provide the information that we need.

@cakrit Thanks again for getting back. Good to know that the Archer C6 is currently working fine, please monitor the performance to see if there is still an issue even without the RE305.