[HowTo] [updated] Install the WIO Server on Raspberry Pi 3

Do you have the Chrome Application “Postman” or another REST test environment installed? Then we can test the connection manually (you can also use CURL, but I prefer Postman):

POST http://[your IP]:8080/v1/user/login?email=[your user]&password=[your password]

You should get an access token back.

GET http://[your IP]:8080/v1/nodes/list?access_token=[your access token]

Do you get a reponse for these two requests?
I intentionally bypassed the SSL part here by using http and port 8080 to test whether your problem is the certificate.