Hello @stevie_6535
I hope you are doing well, and thanks for reaching out.
Adobe Reader cannot modify or save changes to a form unless it has been “Reader-enabled.” This must be done in Acrobat Pro before sharing the form:
- In Acrobat Pro, go to Menu > Save As Other > Reader Extended PDF > Enable More Tools (includes form fill-in & save).
- Save the file with a new name and distribute that version to clients.
- Check this article for more information: https://adobe.ly/3HIMGim
Ensure the form allows modifications:
- Open the PDF in Acrobat Pro.
- Go to Menu > Document Properties > Security.
- Confirm that form filling and saving are permitted.
Use Fill & Sign Instead of “Create Copy”: Adobe Reader users should use the Fill & Sign tool to complete forms rather than trying to “create a copy,” which is intended for collaborative workflows and may fail if the form isn’t properly enabled. See this article for steps: https://adobe.ly/3HnjJIR
I hope this helps, and let us know how it goes.
Thanks,
Anand Sri.