Jira Service Management. Company Managed project.
After the Customer creates a ticket in the Customer portal, the following page appears. when I go as admin into the administration portal, I am able to see that the ticket was created.
The customers are : Everyone with an account on this Jira instance is a customer.

I did some changes to Issue security as I wanted to give different service groups access to different issue types to work on.
I created 3 groups for Admin, HR, and finance team and assigned users to the groups.
I assigned the groups to service levels (level 1 2 and 3). And then I assigned all request type a security level or either of these levels

Is was after this that this 'No Access' Error popped up when portal customers submitted a ticket.
What could be the problem?