@Juve I have a theory and that at least I solved it. It turns out that android devices today have an option enabled by default that is the random MAC, changes every so often and the tplink at first...

@Juve This is the response sent by support to the unknown device query Parker Hu <parker.hu@tp-link.com> lun., 12 oct. 3:23 (hace 1 día) para mí Dear customer This is a senior engineer from TP-Link...

@Juve I have the same problem, constant notification of a device disconnected from my Wi-Fi network "Unknown" that does not appear in the list or connection history