Build an Online Store

I don't need an online store built. It was the only option to check. I have made an online store ([login to view URL]) but WooCommerce and PayPal aren't communicating and I've lost two orders because of this. Can someone help me figure out what's wrong? I have all the PayPal info and IPN number, but they aren't connecting and customers are telling us "I tried to order and it won't let me. Says my PayPal password is wrong but it's not. When I go to PayPal website, it signs right in." HELP. Willing to pay to get this FIXED. Looking to pay $50 to fix the problem or best offer