When attempting to log in the mobile application using the Android OS is not working, it prompts an error indicating that the server is unavailable, with iOS works just fine.
Release :17.1 or higher
Component : MOBILE APS FOR SERVICE DESK MANAGER
The certificate chain is incomplete and Android does not recognize the certificate.
Use the site bellow in order to verify if the certificate is valid or incomplete or if there is anything wrong with it:
https://www.sslshopper.com/ssl-checker.html
If the certificate is incomplete or not valid speak with your vendor about it so they can provide you with the correct certificates.