This problem started today after I disabled Sezzle. I’ve tried about everything but still cant manage to fix the problem.
Sezzle has instructions on how to install their button here. If you followed these steps, then you’ll want to remove {% section ‘sezzle-checkout-button’ %} from either your product.liquid file or product-template.liquid file which can be accessed by going to Online Store/Themes/Actions/Edit Code.
Is it also normal that it shows up on all my themes? Even when I add a brand new theme the problem shows up once again.
Could be from an app since some apps have the ability to inject scripts into your theme which would explain why it appears on all themes. You could try contacting Shopify Support to see if they can determine if the issue is stemming from an app. You can contact Shopify Support by logging into your store through the help center, searching your question/issue, then selecting “continue” at the bottom of the page that displays the search results.