Leedarson Remote Controller

I bought a bunch of Ecosmart Zigbee bulbs that came with a 4 button Remote controller.

I found out the remotes are made by Leedarson, and it doesn’t appear to be showing up in the smart things app. How can I go about pairing this to my smart things?

Ecosmart box
image

Leedarson Remote
https://www.leedarson.com/iot.php/Product/detail/id/148#noscroll