Preview is password protecting all my PDF documents

I am filling out a form and each time I save it to send it off, it adds a password. I don't know what the password is, I did not set up a password protection on Preview. The computer is new and I had been sent a password protected document. I have tried that password and every password I use and still I cannot get the doc to open. I have filled it out 2 x and it is 19 pages long. Is there currently an error on Safari 16.1 and/or OS Ventura 13.01 or Preview. How can I remove the password in preview? Is there a code or something. Thank you for the help. I have never had this happen before.