To configuring service account for the application after creating generated password causing issue many times, needs to validate active directory (AD) credentials before configuring it. Because enterprise level policy would disable service account with bad password attempts. The PowerShell script
Clear SharePoint 2013 Config Cache
SharePoint 2013 Config Cache fix mostly unstable service or applications, try with cache clear script as troubleshoot them in farm level. Here the scripts makes perfect with dynamic values of GUI ID and other parameters. Standalone farm clean can be