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Hi @jang82978297, try to reset the modem. Look for the small RESET button at the back then push and hold it down. The modem will re-attempt to auto-configure. If you still get the same message, try to do the manual configuration.
Check out this link for your reference: Setup and Configuration for TP-Link VX420-G2v modem/router
Regards,
Aubrey
Have you tried the manual configuration yet?
Setup and Configuration for TP-Link VX420-G2v modem/router
Aubrey
Let's know your best time for a call and we'll get our tech team contact you. You can send your contact details via private message.
Thanks,
Aubrey