Howdy @serenityslr,
Oh wow, sorry for the trouble here! That is certainly strange.
This may sound funny, but it appears that you have an image loaded on your site that shares the same URL (/calendar) as the calendar.
Will you please try changing the calendar URL for me? You can do that by heading to Events > Settings, changing the Events URL Slug option to events, and saving your settings.
Once you’ve done that, please navigate to Settings > Permalinks from the WordPress dashboard and simply click the “Save Changes” button without making any changes. That will clear the cache on your site to make sure that the URL change takes effect.
Once you’ve done that, please try visiting your calendar at: https://holdingstrong.com/events
Does the calendar appear then? Please let me know.
Cheers!
Geoff