Nextend Social Login Facebook verification error

Hi,

Anyone used Nextend Social Login? I was able to setup twitter and google with no error.

But with Facebook it gives me an error when i try to verify settings. Error is: Insecure Login Blocked: You can’t get an access token or log in to this app from an insecure page. Try re-loading the page as https://

tried to search answers but to no avail. I was hoping someone encountered the same issue and was able to fix it.

Thanks in advance!