We suggest you do not just use "Save As" to save generated PDFs to your computer. Instead, while in EstateAssist, after making any changes you want to the form, we would suggest you use the "Print" function in your browser and change the "printer" to your computer's "Print to PDF" option. This will save your PDF to the folder on your computer that you select, but in a static format. The fillable fields will be "locked" and you will have a traditional PDF image that is easier to use, share, send, reopen, etc.
See more here: Saving PDFs so they cannot be altered - YouTube