Question:
Why does the Engage URL Invite work Offline for Approved Email but not Online?
Answer:
Online requires specific case sensitivity to be used in the tokens to be generated.
Example of incorrect syntax:
call2_vod__c.cobrowse_URL_participant_vod__c
The proper syntax is:
Call2_vod__c.Cobrowse_URL_Participant_vod__c
Related Documentation:
CRM Help Documentation: Engage Meeting Overview