[swpm_protected member_id=”1-2-3″] not working

Hello, sice a few days my clients can’t access to a special content protect by:

[swpm_protected member_id=”1-2-3″]

(content)

[/swpm_protected]

I can’t understand what’s happening (1-2-3 are the members numbers of the clients should see the protect content)

thank you very much!

The page I need help with: [log in to see the link]