How To Make Userform That Works As Password Box

I want to make a user form that works as a password box. I have UserForm1 which is my "Menu" and I created UserForm2, which is my password entry form. The problem I have is that once I click "go" on my password box (which works fine), the Password Box closes but the user form remains open. I want the user form to close as well when I click "Go". So, my password box should close both UserForm1 and UserForm2.

Here is my code:

Private Sub cmdPasswordGo_Click()
Dim UserName, Password As String
UserName = txtUserName.Text
Password = txtPassword.Text
If UserName = "Chad" And Password = "Pass01" Then
Unload Me
Else: MsgBox "Your authentication cannot be validated"
End If
End Sub

My issue is that once UserForm2 is "unloaded", UserForm 1 is "active" but I cannot simply "Unload Me" again, I get an error.