I've been trying to get this to work for days now, i can't figure it out 
I've done as suggested by @usernameTaken @oanqa and @directnupe
I've added register=1 and commented out #wg_reg_pubkey and #wg_check_pubkey
I'm getting public and private keys generated, both in my wg.json and in all my conf files.
I'm setting the interface up in Luci, following these pictures as yazdan linked earlier:
If i check my wireguard status in Luci, my first peer is connected and there was a handshake, but the second peer never connects.
And it looks like there is some traffic on the wg0 interface, although not much 
What am i doing wrong?