Dextr is able to use both native Operating System and Chrome notifications for incoming contacts. If the notification doesn’t show up there are a few settings to check:
Head over to chrome://flags/ and make sure that system notifications are enabled if you want to use your OS notifications.
If disabled, you’ll receive Chrome notifications instead.
If you’re in Windows, you also need to make sure that Chrome notifications are on.
If you’re still not receiving notifications, you want to ensure that https://go.dextrflex.com is allowed to send notifications through Chrome. You can check that by going to chrome://settings/content/notifications?search=notification and confirm that sites can ask for permission to send notifications. On login Dextr asks for permission but it is up to you to allow it.