@StevieBWonder Here's your C50 guide. The range extender mode is in Chapter 6: https://static.tp-link.com/2020/202009/20200911/1910012866_Archer%20C50(EU)_UG_V1.pdf

@dme3 Sorry, I don't own C2300 to provide a config file. There's other AP scenario you can try to see if that will matter. In this case you are using the C2300 LAN port instead to connect to the main...

@dme3 Regarding DHCP flooding in AP mode you may try Kevin's suggestion from this thread and see if that helps.

@Bitterman Refer to this thread.

@MNS-Online.net You can view online device clients in the Network Map: For a short time period you can view the offline devices that have been connected In the DHCP Client list: or In the ARP list:

@Jah_Ith_Ber When TV box is connected with ethernet cable, can you ping the device from computer via its IP address ? Or vice versa, ping the computer or router from the TV Box to check if its LAN...