I don’t receive notifications either despite repeated attempts to correct (including new accounts using other email programs).
Thank you for the code above.
BTW – I did find a calender widget that has far less overhead than the other one (shall remain nameless). Check it out > https://wordpress.org/plugins/event-organiser/ It has a few glitches, but the developer is seemingly on top of things and this seems to satisfy what we need for an events manager.