How can I edit the fields in Prepare Form mode after saving pdf as Reader Extended PDF? Save a copy is not working

Now that I need to make changes to the pdf form the tool option for “Prepare Form” is not working. It’s giving an error message that says :

Saving a copy doesn’t do anything to solve the problem, the copied version still doesn’t allow the tool called “Prepare Form. It seems to take the same security settings with it when it gets copied
I’ve tried to modify with the Security settings in the pdf but this doesn’t resolve anything. This is what it looks like:

