@AmranS First of all, there is nothing your broadband provider could do about it. Second, I highly doubt a replacement of the AV600 device would help. Powerline adapters are not fast to begin with...

@DavidCC Hi, Since the Archer AX20 doesn't have a default password for accessing it's management GUI you must have set a custom password yourself. Unless you've set a password that can be guessed...

@rctp Here is the link to the official user guide for your AX21 V4.6. https://static.tp-link.com/upload/manual/2023/202305/20230529/1910013415_Archer%20AX21(US)4.6_UG_REV4.6.0.pdf In the section "LED...

@AmranS Hi, Could you please clarify the exact model number of your TP-Link extender? (should be printed on a label on the device itself) Normaly, the term "AV600" is more associated with TP-Link's...

@rctp Hi, What is the model name of your router? Whether the lock icon light is off or on or blinking depends on certain things. Are you trying to connect a wireless device via the "WPS" function?

@Fishlove Ok, then make sure you replicate the settings for the Internet connection from the original router to the Archer AX12. Furthermore, in some cases Internet Service Providers will bind the...