Customers are being sent the internal issue link instead of the portal issue link. They are going to the link and being told they do not have access to the issue.
This is after a greenfield migration from Server to Cloud.
So instead of sitename.atlassian.net/servicedesk/customer/portal/6/PROJ-12345 they are being sent to sitename.atlassian.net/browse/PROJ-12345 which they do not have access to.
Any suggestions on where to look? I am not seeing anything obvious in the project settings for the portal under notifications.