Difficulties limiting access with the “Advanced Access Control” add-on.

Good morning.
I have installed the “Advanced Access Control” add-on yesterday for one of my clients and there is a problem.

Plugins
– Download Manager community version
– Advanced Access Control

Configuration
– Category
|– Name: Attendant
|– Access to role: Attendant (SOLELY)
– File
|– Name: Attendant development-1.pdf
|– Category: Attendant
|– Select Members: development-1 (SOLELY)
– Users or Members
|– Names: development-1 ; development-2
|– Roles: Attendant, iSAQB
– Page
|– Shortcode: [wpdm_all_packages login=1 categories="attendant,isaqb,safe" ...]

Problem
Despite the configuration above the file “Attendant development-1.pdf” is available to both users.
I would expect that with such a configuration the file “Attendant development-1.pdf” would ONLY be accessible to the user “development-1”.
What am I missing?

Greetings
Patrick