@terziyski OK i fixed the issue, I bought xiaomi ax3000, and replace the tp link vr 600 router and everything work as it should, i know the issue is 100% tp link router issue, 2 bad that tp link...

@terziyski sorry the pic is only from the Main Router, the main router is in Wireless Router Mode below is the topoilegy of my setup in home

@terziyski The issue is communication between WIFI device to cable connected device, there is no ping between them after moveing from AP WIFI to the Main Router WIFI. so after i once been in the AP...

@terziyski So, did you or did you not disable VR600 DHCP server ? - i was talking about the main Router Not the AP Device, in the AP i removed the DHCP server like in the guide, again, the Issue is...

@terziyski Did you reset the VR600 before you start with the configuration? - Yes There's nothing more you can do except to update VR600 firmware to the latest one from here and test again. - Did it,...

@terziyski thanks for the help, I follow your guidance, with no success, it still not connecting to local device in the LAN network. Is there anything else I can do? Eli.