Unity SDK problem.

error CS0117: ‘ParseClient’ does not contain a definition for ‘StartClient’
error CS0426: The type name ‘Configuration’ does not exist in the type ‘ParseClient’

I´ve tried install the SKD in different versions of unity from 2022 to Unity 6 but is always the same problem.
Have been installed directly from the SDK and NuGet but does not seem to work either way.

using Parse; - seems to work but the functions inside the ParseClient are just not there.