Regarding Bill Print From Mobile Client

Dear All,
I have an issue with mobile print. I have done the mobile client setup as per the below tutorial.
But when giving the print bill from the mobile client, the print is not coming. In the mobile client settings I have selected the print bill option and still the print is not coming.
But when am connecting thorough RDP , the print is working fine. I have attached the backup file (1.6 MB)
Am checking with the ‘waiter’ user.