PDF Opens but no annotation option

The file is opened but no option to annotate is there when the three dots  menu is clicked. If I right click on text then too there is no option to annotate. 

<img width="1911" height="933" alt="Image" src="https://github.com/user-attachments/assets/5d7b0293-f99f-46e8-b9b6-eaf9df82cf1d" />