Here is a video of the exact steps mentioned below: Astea Mobile Video
Note: Delete the "https://" that is already in the field, and then copy and paste the URL listed above.
Scroll down to Astea Mobile and tap on it
Toggle on the 3 choices at the bottom
Force quit Astea Mobile and re-open it
Delete the "https://" text and copy and paste in the URL provided at the top of this article
Wait for it to download it's config
Sign in with your Astea ID and password (Does NOT use Single Sign-On)