RAK2013 Pi3+ without USB

Issue: How do I configure the RAK2013 (96) to connect to my Pi3+ without microUSB from the Pi3+?

Setup: Pi3+ & RAK2013

Details: I don’t want a cable connected from the Pi3 to the RAK2013 but unsure what I need to do to achieve this. I have a fresh install of Rasbpian and installed the GIT files to the Pi as per the instructions. I have Green/Blue LED’s on solid and Red flashing off every 3 seconds. With micro USB attached to RAK2013 I get a connection from WWAN0 ad it displays an IP address although the internet connection is very very slow and often displays “no Internet”. When the micro USB is removed this connection completely disappears.

Please help?