Link two peplink MAX BR1 mini core

Hello, how can i connect my BR1 with only cellular LTE to another BR1 LTE ?
there is a guide?
i tried a lot of ways but nothing worked.
Thanks in advance!

Cellular connections tend to use CGNAT so you can’t go direct from one to another. You’ll need a hub device. Peplink have a Fusionhub virtual appliance you can use for this,

or you can use Speedfusion cloud and the relay mode.