Sonoff powr2 on 4g modem

Hi guys. I’m trying to pair sonoff powr2 on 4g modem, but it seems that the ewelink app does not connect to the ewelink cloud, can you tell me if there are any parameters to set in the 4g router, I have cudy lt18 as router, thanks

To connect your Sonoff PowR2 to the eWeLink app, it requires a pure 2.4GHz network. As long as your 4G modem can emit the 2.4 GHz frequency, it should work. We recommend reaching out to your modem’s seller or manufacturer to inquire about the specific settings needed for offering 2.4GHz wifi.