Hi Laz,
You are welcome - well deserved.
About the error - it is in section: Cisco SD-WAN Controllers Installation.
You gave Org Name as nwl-sdwan-lab in the GUI conf, while every other reference when managing the certs via CLI is set to nwl-lab-sdwan.
Due to this vEdges were visible in vManage (as the certs were signed by CA), but not registering.
I found out about this error in one of linux logs that was saying Org Name mismatch in certificate - that finally directed me to what the problem was as it took few hours and doing the lab from a scratch 
No worries though - it got the skill cemented in my mind haha.
BR, Maciej Stanecki