Issue with approving 2FA push notification on mobile device

Products

• CA Strong Authentication

Issue/Introduction

User is getting the push notification on mobile device from "CA Mobile authenticator apps" and once he approves it, it is giving network error.

Below is device info:
SDK Version: 2.0.1
Device Info: 
Device model: samsung SM-G930W8
Android OS version: O (8.0.0)
Android SDK version : 26 
App version: 3.0.4
Connected over WIFI

 

The logs from CA authenticator app shows,

04-25 15:04:13.571 1449 2909 E Conscrypt: ------------------Untrusted chain: ----------------------
04-25 15:04:13.572 1449 2909 E Conscrypt: == Chain0 ==

...

04-25 15:04:13.782 1449 2909 D c : callback 7: status == STATUS_FAILURE
04-25 15:04:13.782 1449 2909 I c : error code: 20, erroMsg: Unexpected network error, raw:

Resolution

For using mobile devices, the AA server certificate needs to be signed by well-known CA.