Why won't my single product page fully load?

This product on my website desertfanatics.com (https://shop.desertfanatics.com/products/reflective-vinyl-flags)

will not completely load, and I can’t seem to figure out why. This just started happening and is unfortunately a popular item that now can’t be purchased as the page never let you make a selection

Hi,** @Desert_Fanatics **.

Are you using a third-party app to control that particular product, or any of your store’s products?

If so, you can try to disable the app’s features temporarily if it’s available to do so within the app, to see if the issue will be fixed. You can also try and install a fresh copy of a Shopify theme by going to Online store > Themes > Explore free themes and select a theme to add to your library. From there, click on Actions > Preview, and you can then navigate to that product page to see if it will successfully load.

If the issues don’t persist on a fresh Shopify theme, chances are a third-party app is interfering with your product page. If you or a developer working on your store have made any code changes recently to your theme, the newly added code may also be the cause of this issue.

If you need further help to look into your issues, you can contact our live support team so that we can take a closer look at your account from our end. We aren’t able to do this via the Community Forums at this stage, but you can reach out to our support team via our help centre here. Once you’ve logged in to your store on our help centre, type in your question or the topic you need help with. After that, you should see the Get Support heading at the very bottom of the page, and you can click Continue to start a support request. From there, our support team can assist with your query further.