The calendar is read only

Calendar
1

Dear all,

I have added a Google calendar to eM client.

Now, when I receive an invitation to an event, I open the .ics attached invitation to try to create the event, but eM client tells me

Unable to save the item, because the account is read-only.

Could somebody help?
Thanks in advance.

Cheers, Manuel

2

How did you add your calendar? Is is associated to a Google account? Because FYI, a google calendar is read-only when it is added as a subscribed calendar.