@Hein0703 issue is incoming mostly as in my thread https://community.tp-link.com/en/business/forum/topic/720022 Looking deeper seems that current firmware for ER7212PC is based on Omada SDN...

i bought ES205G and tried to integrate with existing ER7212PC but I am not able to discover device. Looking deeper seems that current firmware for ER7212PC is based on Omada SDN Controller v5.14.0...