Depending on how you test you maybe need to enable the “Notify about your own actions via email” checkbox to get email notifications?
Additionally i have noticed a few things:
- You haven’t stated which ownCloud version you are running exactly (there was 10.1.0 and 10.1.1)
- My Activity app version is 2.5.0 where you are using 2.4.2
- There is a yellow banner on one of your posted screenshots, maybe you need to do some fixes mentioned there first?
- Maybe upgrading to 10.2.0 could make sense?