oa_social_login_test shortcode doesn't work

Hello,
Here: https://docs.oneall.com/plugins/guide/social-login-wordpress/#4.2 it says that I could add the following:

[oa_social_login_test is_social_login_user="true"]
  This content is displayed only if the user IS logged in AND has used Social Login to login.
[/oa_social_login_test]

[oa_social_login_test is_social_login_user="false"]
  This content is displayed only if the user IS logged in AND has NOT used Social Login to login.
[/oa_social_login_test]

to a page/post. I copy/pasted the shortcode example as is, and nothing gets shown wether I am logged in or not.

Am I missing something?
Thank you very much

https://www.ads-software.com/plugins/oa-social-login/