Hi,
After investigation with trying different changes to the roles, finally resolved the admin user issue.
Our instance organisational hierarchy begins with MoPH > Cotenant > Country > Province > Region > District > and Health Facility. Initially, all administrative users were tagged at the Country level. The DHIS2 organization endpoint was encountering an error while opening the maintenance window. However, after reassigning the admin users to MoPH level and de-tagging them from the Country level the issue resolved.
We still don’t know why it starts behaving like this. Any suggestion @austin OR @Gassim.