many user who previously had access suddenly no longer have access anymore

[Erhan Deniz]

Hello dear community, for several days now, I have been unable to grant access to anyone on my Confluence portal, and an unknown person has been added as another admin. Furthermore, since this morning, many colleagues who previously had access suddenly no longer have access. Who should I contact to get the right support here?

Thank you very much .. Greetings E. Deniz

[Sunny Sun]

Hello @Erhan Deniz

do you know what edition/plan your confluence is on? (ex: free, standard, premium,etc)

[Erhan Deniz]

good question :-) ... it must be, premium,

[Rilwan Ahmed]

Hi @Erhan Deniz ,

Welcome to the community !!

1. If the unknown person is not from your organization/company, please contact Atlassian support directly in https://support.atlassian.com/contact/
2. If you are a confluence admin, go to confluence settings --> Global permissions 
   Check the groups granted access for the confluence instance
   https://<baseURL>.atlassian.net/wiki/admin/permissions/global?tab=internal
3. Go to confluence settings --> Space permissions --> scroll down and click  to Recover the access to the spaces 
   https://<baseURL>.atlassian.net/wiki/admin/permissions/viewdefaultspacepermissions.action

[Rilwan Ahmed]

If you are not an confluence admin, then check in your company who is the confluence admin and speak to them.