Workspace Error: "Your account cannot be added using this server address"

When adding account with NetScaler Gateway FQDN in Workspace, you may have below error prompt: "Your account cannot be added using this server address. Make sure you entered it correctly. You may need to enter your email address instead."...

Error: "Your account cannot be added using this server address" When Adding a Store on Receiver

The following error is seen whileadding a store on Citrix Receiver: "Your account cannot be added using this server address. Make sure you entered it correctly. You may need to enter your email address instead."...