@Dzezik As you say, the version of your current controller is a long time ago. I remember that the V4 version of the controller still had the Log4j bug, but fortunately V5 fixed that big bug. As for...

@DmitryG Some questions： What is the firmware version of your current working and non-working EAP? Which firmware version was this EAP225 before it was upgraded? What is your current controller...

@m.fessler Standalone Mode: only individually configurable? Use the Standalone AP page on the Omada App to set it up Omada Cloud-Based Controller: no need additional Hardware,...

@bollman This switch has the firmware upgraded, take a look: https://www.tp-link.com/en/support/download/tl-sg2218/#Firmware Try to update and test.

@Thor_Sten You may have some misunderstanding, as far as I know the 1005P can power PD devices but cannot be powered by POE as a PD device. There is a switch you may wish to look into：...

@Daniel_Emilio Have you tried resetting this EAP to try it out? How exactly did you power up this EAP? Did you use the original POE adapter? If the EAP is not connected to the router, but PC - EAP,...