Can't copy events from a subscribed calendar to my own private calendar

[Alin365]

I am on MacBook Pro's Calendar app.
I have two calendars: one is my iCal calendar, and the other one is an iCal feed from a website.
I am trying to copy an event from the iCal feed to my personal iCal calendar. I used to be able to drag and drop the event to my personal iCal calendar.

Is this an update or is my computer glitching?

Thank you.

Additional Information:
Computer: MacBook Pro (Retina, 13-inch, Early 2015)
OS: macOS Sierra

P.S. If I have posted in the wrong forum category, please move the post to the appropriate category. Thank you.

 

[Rod]

As you can imagine I cannot assume anything so:
What device are you using? Computer type/model.
What Operating System? OSX ?
Are you referring to iCal as your "personal" calendar? If not which calendar? eg Google, Outlook, or some other.
What calendar are you subscribed to?
How do you access your subscribed to calendar?

Get back to us with these things and we can probably help.

 

[Alin365]

Thank you, I have added additional information. Please let me know if you need any more information.

As you can imagine I cannot assume anything so:
What device are you using? Computer type/model.
What Operating System? OSX ?

Computer: MacBook Pro (Retina, 13-inch, Early 2015)
OS: macOS Sierra

Are you referring to iCal as your "personal" calendar? If not which calendar? eg Google, Outlook, or some other.

Yes, iCal = my personal calendar

What calendar are you subscribed to?

A iCalendar feed from a website

How do you access your subscribed to calendar?

On MacBook Pro, using its default app "Calendar."


I am on MacBook Pro's Calendar app.
I have two calendars: one is my iCal calendar, and the other one is an iCal feed from a website.
I am trying to copy an event from the iCal feed to my personal iCal calendar. I used to be able to drag and drop the event to my personal iCal calendar.