Amazon's Alexa Plus subscription evidently doesn't play nice with smaller smart displays, crowding out the time in favor of other content.
The way to set an alarm on your Fitbit varies depending on what model you have. You might set an alarm using the Fitbit app or website, or the device.
To change the time on a Fitbit, you'll need to adjust the time zone setting for your device on the Fitbit mobile app or ...