Press Enter & Login to Excel Sheet

R/sir
this file was working fine than today morning i will open the file the error was display " Run time error '9' Subscript Out of Range please resolve this error , i am create a three user form 'Admin Login', ' Change Password', 'Add User', this vba code was working fine than i open the excel sheet the login user form was display than i am add user name & password & press enter this was not working than i am use mouse & press login with mouse this was working fine & than i am Click on the Add user Button the Add user User Form was display & fill all the information & press enter this was not working than i am open the excel sheet the Admin login user Form was display & fill the Username & Password & press the enter from the keyboard this was login to the excel sheet
than i am Click on the Add user Button the Add user User Form was display & fill all the information & press enter from the keyboard this was add new user & Than press the exit Button Only the Add User User Form Was Close not exit This excel sheet i add the Vba code for Remove Title Bar this code was Remove The Title Bar for 3 user form 'Admin Login', ' Change Password', 'Add User', but this code was not Remove the Title bar For Following User Forms "Add Customer, Add Purchase, Daily Expanses" please correction All the error in this Files i am resend the Attachments now you can see the attachments & resolve the Problem
Thanking You