An issue with signing in from Mobile app

Hey Guys,

I Recently set up my FileRun account and have been having a few issues trying to get the Android app working.

I connect my FileRun up to a server: https://externalip:port

this adds in fine and then says it needs to log in to allow access.

When I click on login it just redirects me to a white page and nothing ever happens.

Here are some screenshots if they help:

White Page:

https://i.imgur.com/TIxtmjk.png

API:

https://i.imgur.com/DC2eJOU.png

Client:

https://i.imgur.com/GYay1iO.png

Signed Certificate:

https://i.imgur.com/aygMnpz.png

If anyone has any ideas please let me know.

Thanks in advanced :)