This can be a real point of confusion for some of our customers. When we first created the plugin, Citrix only had a long number at the end of their registration URL. We decided to call this number the “webinar id” and use it in our short code.
Since then, Citrix has introduced a second number, literally called “webinar ID” and it’s different from the number at the end of the registration URL. So… currently, even though Citrix now has a number labled “Webinar ID”, you still need to use the long number at the end of the registration URL.
See image below for clarification. (And apologies for any confusion).