How to make Arduino Nano work with RFM69. This type of thing has only been asked about 7 million times on this forum.
The EVERY is a new board I am not familiar with. You have to check the serial CS and Interrupt pins, pass them in through the RFM69 constructor if they are different.
Make good solid connections. It's a 5V board so yes you need logic buffering since the RF chip is 3.3V.
Good luck and may the force of self-torture be with you, doing what otherwise would work out of box on a humble Moteino.