Be highly suspicious of emails that ask you to click a link to "log into your Citrix account" to verify your details. Official Citrix portals should only be accessed via trusted bookmarks.
Verify the Citrix Workspace app is correctly installed and updated on your device. Security Best Practices home affairs citrix login
After your primary password is accepted, the system will prompt you for a secondary verification step. Depending on your configuration, you will need to: Be highly suspicious of emails that ask you