I downloaded Adobe Acrobat Reader DC for my computer; Toshiba Satellite with Windows 10, hoping I could edit my pdf documents (highlight and write comments). I can Highlight but when I went to write a comment it didn't showed any typing. I tried different ways to write the comment but none worked. The note did appeared but when I typed it didn't showed any letters and the cursor didn't move. I wanted to know how it could be fixed.
Sorry for the delay in response.
Could you please try updating Adobe Acrobat reader DC to the latest patch released.
Open application, go to Help menu > Check for updates.
You may also refer the help document for more information on updates: Release Notes | Adobe Acrobat, Reader
Let us know if you still experience the issue.