I need to know how to lock a PDF, Here is a thread on the same question that was not answer. https://forums.adobe.com/thread/1703903
What I CURRENTLY see, missing the lock document option:
What I WANT to see, taken from another PDF form:
Can you try to create a new digital id: https://acrobatusers.com/tutorials/how-to-lock-form-fields-using-a-digital-signature and try again.
Let us know if that helps.
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