Hello,
I created a KANBAN Board with a filter that only show specific epics. I did configure my dashboard (added swimlanes, columns, quick filters). There was one JIRA feature that asked me if I wanted to use the new "backlog". Today, i wanted to change the columns of my board and I have no access to the configure board screen.
I decided that I was going to copy it, thinking that I maybe corrupted it with this backlog feature. Now I have a Copy Board that is also impossible to configure and therefor I cannot delete it.
So as I really needed to start on this board, I created a new Kanban board with a filter for specific epic and I have the same issue 
What do you think is the problem?
Thank you in advance