404 error on patreon shop pages

Hello, I’m having trouble with a 404 error and not sure what to do. It has only started today, it happens on the products I’m selling. Whenever one is clicked it the page doesn’t come up and only shows the 404 error.
Apologise of I don’t describe this in full detail, I am not sure how to fix this. As tutorials and other websites don’t help, I decided to just come here and see if anyone had ideas on how to help.
If so then thank you.

Check and make sure that you have pretty permalinks turned on in WP admin → Settings → Permalinks.