Excel 2007 Unlocking Specific Cells Based on Password

I am having a problem with my code to allow different users access to certain cells. When the workbook opens, the user enters their name into an inputbox, and the code grants them access to certain cells based on their level of permission. However, when they change the worksheet and save, their permissions are saved with it. If another user signs in to the workbook, they are limited to or allowed access to the cells allowed to the previous user, regardless of the new user's permission parameters.

Here is my code:

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