@Boom22545 

Hello, how do you connect the TL-WA801ND to the main router? If it works in access point mode, then it should be plug and play.

As for the led indicator, we failed to open the link attached, could you please send us a video as attachment?

Besides, you can hard reset the access point by holding the reset button for 10s with it powered on.

Best regards.

@Boom22545 

Hello, try to hold the reset button for 10s with the TL-WA801ND powered on.

Was there any power outage or firmware upgrading before this issue happens?

Please use the original power adapter. And may I know when did you buy this access point?

If still the same, you can contact the retailer or the local tech support to verify whether it is qualified to get a replacement.

Good day.