Debug.apk Accounts Register and Login not working

I start an empty project with just semantic and user account password added. Nothing much more.

with {{ atForm }} on the template.

Then I build android APK with --debug and --server parameter.

After install debug.apk on my phone, I try register new user, but after click on register button, the form field become faded and not login.

I try do the same on browser and everything is working well. Why it doesn’t work in Android App (apk) version?

The app is deploy using kadirahq meteor up

Which part might gone wrong? Please advice, thank you.

Fixed by the help of this post. Didn’t realise it was caused by mobile carrier network.