Looks like it's v 3.0 not 3.03 installed (we just took over this site a month ago so I had to go look.)
I will download the latest version and try it out.
Starting on June 29, 2020 Instagram obsoleted their API and now using the Social Login with Instagram produces this error:
{
"error_type": "OAuthException",
"code": 400,
"error_message": "Invalid scope field(s): basic"
}
https://www.instagram.com/developer/ says that the API is obsolete.
Are there any plans to update the plugin to meet the current API?