improve a software on development in Visual Studio

You need to have VS and devexpress to work on my project. The software that I have is about users, accounting, reports and operations. 1. you need to fix some bugs of the software that are not working well: -solve the problem with the wizard that creates the database(sometimes not working and when I run the .exe, it only open the login windows. I think is better to create a button on the login windows to open the wizard, and in other cases open right away the wizard when the software has not been yet connected to the database. ) -In the software I created 3 types of users: administrator - with all privileges, seller - with privileges to only add operations and each seller cannot see other sellers operations, and cashier - with priveleges to add payments on cashboxes and descriptions of them, and add Income operations and Expense operations.(the sellers cannot do what cashiers do.) -When a seller creates an operations, there has to be a button to create a report to preview and print, here you have to connect some cells of the template the the data inserted in the operation(the data that you have to insert is specified in the 13 cells notes). -Test and fix the functions that are not working, or are working with errors and incorrectly. 2. Improve the design as the images I will send you(I have the images in psd and ready to add). 3. Prepare the software to add translation of each text, for 2 more languages besides english. You have to send me the the files prepared to work in any pc and deliver it on dead-line till monday morning.