Hi and thank you,
I tried some other GDPR-plugins and got the exact same problem with them, so the issue was not with your plugin specifically. The fix I found was to override both frontend and backend styling of said plugins from the settings of my wordpress theme (OP3). Thank you anyway!
With respect,
J
Forget the last addition, got subscribe2 to work by adding xml:lang="fi". Facebook is still broken though.
Addition:
I’m also using Subscribe2-plugin for email notifications. It also fails to show that post excerpt correctly.