How to unsubscribe only for emails that say "a new task is added to weekplan"?

Since a few days/weeks, each time I add a task to weekplan, I instantly get an email saying "a new task is added to your weekplan". I don't like it that weekplan fills my mailbox like this. I didn't find an option to check this option out. Clicking on 'unsubscribe' in the email doesn't seem to work (https://app.weekplan.net/#view=AccountSettings?utm_medium=email&utm_source=wp&utm_campaign=no - page stays blue) .
I have now checked the box "unsubscribe from all emails" in my account settings, but I don't mind receiving the 'peptalk emails from weekplan". Is there an option to stop the default synchronization of tasks with my email?