hcfsidney,
Thanks for reaching out and sorry to hear you’re having trouble here, but hopefully I can help. With the release of version 3.5, we introduced a lot of the changes to the template files, including responsive, mobile-friendly layouts. Because of this, any customizations you’ve made to the template files will need to be updated in order to resolve these issues.
I noticed that you’ve performed some template overrides in your theme (http://hcfsidney.ca/wp-content/themes/Webly-Child/tribe-events/), which are probably the culprit of these layout issues that you’re experiencing.
Try updating (or temporarily disabling) your template file overrides and see if that fixes the issue. Thanks! 🙂
-Casey-