@Al-Mashriq you have an insanely large network, I would set the nettmask to 255.255.255.0 (172.16.1.0 255.255.255.0) you should set the lease time to 8 hours max.

@Alfred_A you can only use the Omada access point. Here are compatible APs https://www.tp-link.com/en/business-networking/omada/wifi/

@Pas7o i'm not sure how to do it, you almost have to look in the documentation of Omada and try. I would probably use vlan and not mac authentication, for example vlan 1 access points and switches...

@Pas7o buy a switch and you can configure port profiles.

@Al-Mashriq It seems that you are running out of IP addresses. what is the subnet mask on your network? how big is the dhcp pool? do you get internet if you set a fixed ip on your pc?

@Hank21 I'm considering buying an EAP683 UR (EU) but I'm using PPSK, does this ap support it? I also wonder if the EAP625-Outdoor HD (EU) has PPSK