@ghl Hey, I guess you configure this feature on controller, and you select Link Backup as the backup mode. Under this mode, the connection won't switch back to primary WAN. You should select Always...

@Sathiya Hey, It seems the speedtest only tests the upload speed of 4G connections. How about unplugging two 4G connections and test upload speed again?

@c0ntrite7 Hey buddy, As you have 2 WAN connections, what is the bandwidth of each WAN? Maybe the packets of your desktop/laptop are forwarded to the WAN with less bandwidth? I suggest you unplug the...

@biomed32uk Hey, Are your switch and controller running the latest version? Seems they have resolved this issue via the latest firmware. See this thread. Besides, if there is no Statistics, do those...

@Nandus Hey, Your switch is V3 or V3.2? I saw on TP-Link website only V3.2 has the firmware 3.20.2 Build 20210806. I think you should double-check if you download the correct firmware file. If you...

@MichaelJTDesign Hey, What's the hardware and firmware versions of your new AP's? You should check if they are compatible with the old controller. It seems you are trying to adopt EAP across the...