How to share the Internet from a computer to a Zyxel Keenetic II router?

Question

network hardware

Hello!
Help, please, with a huge problem. There is a macbook, on it is a usb-modem from Megafon with an "unlimited" Internet. A Zyxel Keenetic II router is connected to the laptop via lan. In the router, the cable occupies the yellow port number 2. Is it possible to somehow share the Internet from the modem from the macbook to the router so that it distributes it to everyone, including via wifi?
(I shared Internet in Mac OS settings from Huawei to Ethernet, but it did not help :-( )
Thank you very much for any help!

Answer 1

I shared the Internet in Mac OS settings from Huawei to Ethernet, but it did not help

If the Internet is already shared on the computer for a wired connection, then your router must connect to the computer via the WAN port.
In the router, the cable occupies the yellow port number 2.
Switch it to the blue port, which should include the provider's cable.

Answer 2

So connect the modem to the Zyxel Keenetic II and distribute the Internet from it.