@DataMeister Use the Compare feature you can see it very clearly. https://www.tp-link.com/en/compare/?type=smb&typeId=5793&productIds=72867%2C70470

@AntonV Good article, what do you think? https://www.tp-link.com/support/faq/2980/

@Matze78 Tried rebooting the device and using different web browsers for testing.

@jhanakhil, Use one poe adapter powering one EAP, some EAPs support POE passthrough which can power other EAPs, but one for one. If you have multiple EAPs, better consider the POE switch.

@d0ugmac1 DHCP reservation is set on the router, maybe the settings won't be assigned if you don't reboot the router.

@Chrisueb Generally this error check to the end, is where the port is blocked problem, suggest you can use telnet to check whether the port is really open, in addition to a different computer to try.