New to Shopify, my store went live last night. All looked good online. Logged back in to Shopify, received error message “404.” Today connected PayPal with my Shopify store and now nobody can find my store online. Logged back into Shopify, received an error of 500 with a message; it flashed on the screen and was not able to read it. Entered the store name in the URL and still nothing can be found, not through Google or any other search engine; all that results is a blank screen indicating the serve link is broken. Help please.