Impossible to edit mail

This is a conflict with your theme or another plugin. You should disable all plugins one by one until you find the culprit. If this is not related to any other plugins, then you’ll have to temporarily switch your theme to a default WordPress one.

If you need help with that, get in touch with us over here: https://support.mailpoet.com/wordpress-forums/

Yes it was…

for your info…
https://www.ads-software.com/plugins/buddypress-compliments/

I did remove it cauise I didnt use it anyway ??