how to keep people from removing stamps?

You can go to Action Wizard - Create New Action - More Tools - Execute Java Script - Specify settings - write this: " this.flattenPages(); " - OK - Save - Give this action a name and if you want you can add a description - Save.

This action flattens your pdf and you can find it in Tools - Action Wizard (after you created it) and you can use it to flatten the entire pdf.

This way no one can move/remove your stamps.

This is the easiest way to do it as far as i could find because i needed exactly the same thing.

Hi,

I suggest you open the properties panel of your PDF (File>Properties or Ctrl+D or CMD+D), check the security tab.

Using a password you can decide to allow or lock some features of your document preventing other users to change things that you want to keep in place, unless they have the password.

It is always good practice to include the version of your Operating System and version of Acrobat, maybe a couple of screenshots can help us to understand better your issue.