Exit Sub if Inputbox cancel, X Button or blank value is used (bypass debug)

a colleague bought it to my attention, i have placed an admin button in the spreadsheet that removes all protections freeing it up for modification to those that have been given the password, however when a NULL value is entered or the cancel or X button is hit, it goes to debug and end users can see the password.

i have the below string however it doesnt quite work, i have always struggled with IFs

Private Sub CommandButton2_Click()

Dim wSheet As Worksheet
Dim Pwd As String
Pwd = InputBox("Enter your password to unprotect all worksheets", "Please Enter The Password")
On Error Resume Next
For Each wSheet In Worksheets
wSheet.UnProtect Password:=Pwd
Next wSheet

If Err <> 0 Then
MsgBox "You have entered an incorrect password. All worksheets could not " & _
"be unprotected.", vbCritical, "Incorrect Password"

ElseIf (StrPtr(value) = 0) Then
    Exit Sub

ElseIf (value = "") Then
    Exit Sub

End If

CommandButton1.Visible = True

Application.EnableEvents = False
Columns("J:BS").EntireColumn.Hidden = False


End Sub

the 2 x ElseIf is what i have added unfortunately it really doesnt like it.

Many Thanks

Liam