Okay, we have the latest ULX and URS on our server but for some reason scripted entity restrictions won't work on a specific rank.
I'm guessing this is a bug in URS that hasn't been fixed with the latest gmod update yet?
Bug on a specific rank? Possible, but very unlikely.
More likely, group name is different (case-sensitivity), or possibly, an inheritance issue in the groups versus restrictions.
Go to your server console, run "ulx debuginfo" when someone from that group is on your server.
It will tell you a file was created with a path. Go grab that file and attach it (using the link below when you reply "attachments and other options") to your next post.
Additionally, attach your data/ulx/restrictions.txt file from your server.