Wi-Fi 2.4GHz having issue, mainly I set this frequency for all my smart devices. After a while they all disconnected using this firmware 1.2.5 Build 20210308 rel.64655(5553). When I checked the router

Hello, just got AC5400 not AC5400X I noticed on the status on wired or wireless showing zero but under DHCP clients list are listed. Please help how to fix this? And I emailed the TP-Link support can'