calendar invites for Apple users

[LisaEYP]

Hi there, I host a recurring monthly meeting. I typically batch the schedule out several weeks at a time and send out the message to all of the attendees. One attendee has had difficulty with getting the meeting added to their calendar so that the correct link shows up every time. If I'm understanding them correctly, what is happening is that the event is in their calendar but with the same link every time. I'm unsure of the exact steps that the person is using to add the event to their calendar and how much of it may be user error and how much may be a tech issue. They use Apple and the invite goes out using Google Calendar, which I'm now learning could be a big part of the problem. Does anyone know of a solution? TIA