hey dude, I suggest you try to scan for the wireless surroundings and find a clear wireless channel to see if the problem can be solved.

hey dude, I think you can send an email to their technical support, and they will help you. Here is their webapge: https://www.tp-link.com/en/support-contact.html#E-mail-Support

hey dude, I think you can try to clear the wesite browser cache and the problem can be solved.

hey dude, can you take a photo of the power adapter ? Via the photo I can know how you plugged the ethernet cables so that I can help you with it. By the way, are you sure the cables are plugged...

hey dude, great job:)

hey dude, if you can express your meaning in English maybe I can help you on this:)