Delete Adobe Reader from your computers. It’s about the worst option. Instead use a free program that lets you type (and draw) on top of the PDF, and save it as a PDF.
On Windows, use “PDF-XChange Viewer.“https://www.tracker-software.com/product/pdf-xchange-viewer
Oh my God this is frustrating!! I got a call to interview for this position. For some reason HR said they didn’t get the staff ap I sent, along with my resume and cover letter. I show that I did send it. However, in looking it over I realized I’d forgotten to put how much I was paid at a previous job….And now the SOB won’t let me edit. I get as far as adding text, then a pop up pops up demanding I start my “free trial.” I finally said OK to that….but it continues to pop up and it WON’T LET ME EDIT. It’s a viscous circle.