When using Facebook Login, you can either use NitroSell's Facebook App, if your store uses our shared SSL certs, or you can create your own Facebook App, which is necessary if you have a custom SSL cert. (You can learn more here.)
The following is a guide for creating your own Facebook App. Should you need assistance with this process, please contact NitroSell support.
(i) Go to https://developers.facebook.com/apps/ and click Add New App:
(ii) In the box that pops up, fill in your Store's name, your email address and select a Category:
(iii) You will see your new app listed:
Click on it to bring you to the Dashboard:
(iv) Select Choose Platform, then website:
(v) That will bring you to the Quick Start for Website wizard:
At the end of the page, enter your store's address and click Next:
(vi) At the end of the page, choose Skip to Developer Dashboard:
(vii) On the Dashboard, your store now has a unique App ID and App Secret (click the Show button to see it). Take note of these:
(ix) Click on the App Review link on the left, click set Make My Store Public and Confirm:
(x) Finally, you will need to enable it on your store. Please follow the instructions here to enable the second option by entering your App Id and App Secret, and ensure the button is in your templates.
Please open a ticket with NitroSell Support should you need assistance with this process.