Shared google calendar doesnt update automatically

Im using a shared Google calendar but after a while it stopped with automated updates.
If someone else is adding appointments to this shared calendar but I don’t see them.

Unchecking and checking the calendar fixes this but how I can set the updates to appear automatically.

Note: This is only happening with the shared calendar. If Im using my own calendar I dont have any issues. Appointments I eg add on my mobile phone show up in EM Client.

Does anyone know how to solve this?