After reading several articles, it turns out that many cases are the same as what I experienced, the 6ghz mesh deco wifi is not readable by the client, the iPhone 16 pro max and Mac mini m4 have used these two devices but the 6ghz wifi still doesn't appear. After that, I chatted asking for advice and solutions, it turned out that the tp link was very unresponsive, it took a long time to reply to the email, and when I called, no one ever answered the phone. Even though this mesh wifi has only been purchased for less than 1 month, like this I really regret buying this product, it doesn't provide a solution, maybe the product has failed to be marketed, it is very detrimental to people!