You actually should be using the alt_sep variation, see here: https://nation.marketo.com/t5/Product-Discussions/on24-Member-Webinar-URL-not-working-in-Google-cale...
Hi Sanford
Hmm....but my member URL link only has one parameter. So while that seems like good practice, it wouldn't matter here would it? The link and all the functionality works, it's just it triggers a message in Google Calendar.
Weirdly, when I put "alt_sep" in the URL as you have in that article, instead of opening in Google Calendar, it downloads an .ical file instead. Does that mess with the format=gcal parameter?
http://ics.agical.io/?subject=G%20Adventures%20Geo%20Party%20Trivia%20%2D%20Europe&location=&organizer=G%20Adventures&reminder=30&dtstart=2020-06-02T19:00:00%2B10:00&dtend=2020-06-02T20:00:00%2B10:00&description=Join%20here%3A%{{member.webinar URL}}20&attach={{member.webinar URL}}&format=gcal
What's the full rendered URL (with the {{member.webinar url}})?
(and actually even with 1 param you should use alt_sep)
https://calendar.google.com/calendar/r/eventedit?text=G+Adventures+Geo+Party+Trivia+-+Europe&details=Join+here:+https://gadventures.zoom.us/w/99657128808?tk%3DWgfUkXMkoelg0RmxwhCpyD4qXw26GdnyIJCGhsNjjtM.DQIAAAAXNAcbaBZXZ3MxUy1jZVEzT2pyRWxPb0ZCN2N3AAAAAAAAAAAAAAAAAAAAAAAAAAAA&location=https://gadventures.zoom.us/w/99657128808?tk%3DWgfUkXMkoelg0RmxwhCpyD4qXw26GdnyIJCGhsNjjtM.DQIAAAAXNAcbaBZXZ3MxUy1jZVEzT2pyRWxPb0ZCN2N3AAAAAAAAAAAAAAAAAAAAAAAAAAAA&trp=true&sprop&sprop=name:https://gadventures.zoom.us/w/99657128808?tk%3DWgfUkXMkoelg0RmxwhCpyD4qXw26GdnyIJCGhsNjjtM.DQIAAAAXNAcbaBZXZ3MxUy1jZVEzT2pyRWxPb0ZCN2N3AAAAAAAAAAAAAAAAAAAAAAAAAAAA&recur=RRULE:FREQ%3D;INTERVAL%3D1&dates=20200602T090000Z/20200602T100000Z&sf=true
Weirdly, when I just used that link I didn't get the error I was mentioning. Although, I'm creating a new one of these tomorrow (we run them weekly) so I'll post that link when I get it and if I get the same error.