@Vijay399 Has emailed you as mentioned on this thread. https://community.tp-link.com/en/home/forum/topic/179024

@Vijay399 Hello, we have emailed you with the firmware and some other information what we need to do further analysis. Please check your inbox. Good day.

@Dren For your information, the TL-WPA4220KIT has the 100Mbps ethernet ports, which means that the wired speed you can get won't be higher than 100Mbps, combined with the interference/obstacles, the...

@benand_idk I see, by comparing the frequency range of the TL-WA855RE and the radio, the latter one is far less than the former one. Basically, their performances won't be affected. Good day.

@SaMuElSerge What is the led status of the Archer C1200 when it reboot itself automatically? Have you ever tried to power cycle it manually or hard reset it to give it a shot? Good day.

@pashtet Thanks for your updates. I checked the link below: https://www.tp-link.com/en/onemesh/?utm_source=compatibility&utm_medium=local&utm_campaign=all, which lists Archer A7 V5 and RE300 as...