Is that one or more projects.
If it is not all then check there is locks on those projects.
See also
TEC520750 Auto Rights are not granted
Tech Document
Title: Clarity: Auto Rights are not granted when a new object instance is created
TEC524997 Missing Resource - Self (Auto) instance right
Tech Document
Title: Clarity: Missing 'Resource - Self (Auto)' instance right when creating a new resource.