First, I apologize for my bad English.
I have an installtion of Windows, shich uses the data of Jira as a user directory. This is done by Setting uo a Connection when installing Confluence. However, this Connection is "broken" which means that I can no longer sign in to Confluence. To reconnect, you have to sign in to Confluence. Since I already set uo the Connection in the Installation, there is no user in Confuence who does not come from Jira.
The System was installed in Simple mode - without external database but with an internal database.
I have a working Administrator account for Jira.
How can I solve this problem?