@Ninom26 Hello, Below is the guide you may refer to change the admin username and password: How do I change the administrative username or password of TP-Link device? May it help.

@Ben773 Hello, You may refer to the below instructions to open the required ports on the router web UI: Port forwarding: how to set up virtual server on TP-Link 11ac archer series wireless router...

@Nomadtoo Hello, sorry to respond late. Can I have a screenshot of the device label which shows the region version of the C20? According to your description, it seems that the hardware might be a...

@Ysh Hello, The models below support Bandwidth Control: Archer C50 Archer C2 Archer C20i Archer A2 Archer A5

@Catoer Hello, From what you describe, it seems that there is a MAC limitation on your ISP side, please try to ask them to release the previous MAC and bind the new MAC, then check again if the WAN...

@d5k4 Hello, We basically test and guarantee that the wireless bridge or router can be set up to extend the wireless network of another wireless router, but we actually cannot guarantee the...