Cannot write comments

[cindyh23311374]

I am using Acrobat Pro DC 7-day Trial version (just activated) and now I see there are bugs? I cannot write/edit in sticky note unless I choose Open Pop-Up Note every time. I also cannot delete the sticky note even if I choose "delete" in properties. None of the Locked Boxes are checked and I checked Document Properties and Commenting is allowed. I also chose Make Properties Default. Nothing works. Is this part of the known bugs?  

Help!

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[cindyh23311374]

I also am not to save pdf, I get error message 

The document could not be saved. A number is out of range.