SELECTserver client access restrictions

I just upgraded my SELECTserver to 8.11.7.35.  I am trying to set up client access restrictions based upon machine name and it will not allow access.  Using IP address works in my test environment but machine name does not.  I cannot use IP addresses in my environment since I do not control the IP addresses of the computers that will be accessing the site.  I have tried every combination of syntax I can think of, with and without quotes surrounding the name, and nothing works. 

Funny how wildcards will not be accepted in the machine name either but the details area clearly states that it will.  I immediately get a red pop up beneath the machine name that claims !@#$%^&*( ) < > can not be used in computer name field.  See the asterisk in that list?  Is there some other character that is supposed to work for the wildcard?  I know the question mark is a single character substitute but that is not the wildcard I need.

 I've tried to get this to work with several past versions of SSXM and this has never worked for me.  I have even set up Custom Activation Groups to see if those would work and they have the same problem.

Please help!

Kristi