At FireApps, we are always try our best to assist you in fixing issue within our scope of work. More details can be found here.
However, in case your issue/payment needs to be solved by Shopify support, you will need to contact themselves, and we are very sorry about that.
In order to get support from Shopify support team, please follow this support link.
Should you need further support, please feel free to contact us via live chat or email us at firstname.lastname@example.org