I think the problem in self signed certificate. For testing purpouse you can rebuild Super-Gluu with next option in [gradle](https://github.com/GluuFederation/super-gluu/blob/master/Android/app/build.gradle#L66) file:
```
buildConfigField "boolean", "TRUST_ALL_CERT", "true"
```
Mike, we can told Nazar to build this testing version wich works with self signed certificates and put it on our server.