The issue is somehow related to your app. it appears to have modified your collections template.
However, if you add that "?view=gem-1593744843-template" to the end of any of your collection links, they will work again.
https://valetshops.com/collections/home-decor will take you to the 'blank' collection page, but
https://valetshops.com/collections/home-decor?view=gem-1593744843-template will take you to the working collection page.
You will need to go through your navigation menus (and anywhere else where you have your collections individually linked) and add that extra string to the end of the link for it to work.