Why aren't my online store's contact forms sending emails?

My contact forms at https://ukshopruggetterfc.com/pages/teamwear-contact and https://ukshopruggetterfc.com/pages/contact are not sending emails to us. I have checked our contact details and it is the correct information. I’ve also tried changing our contact info to another email and it still doesn’t work. When I send myself a test notification from Shopify, however, does work. So the issue is in the contact form itself. We have had lots of customer complaints recently of us ignoring them, when the case is really a Shopify issue. Can someone help me out and get the form working? Thanks.