Haha, it is something related to lucky.

You need have sip account for your internet service provider. The add a rule on the Telephony part.

The micro usb port on M7350 can only provide internet from windows computers. You need to buy a 3G/4G dongle in the compatibility list....

Hi Becareful, It seems to be a compatible issue. Try to unplug the sim card from the router and check whether the error code still show up. If it is not showing up, you should get a replacement for...

It has no such function. You can send a feedback to TP-Link support.

I think you can contact Acer support for help.