Hi zein_0644,
Thank you for reaching out, and sorry about the trouble caused.
When you say inserting in the PDF file, are you adding them as new pages in the PDF or adding images to the PDF pages?
As the application crashes, please try the troubleshooting steps suggested in the following help document: https://adobe.ly/4ojv4KG.
Ensure that the application is updated to the latest version. You may try reinstalling the application using the steps suggested below:
-Remove the application and run the cleaner tool (https://adobe.ly/4odddVx).
-Reboot the machine
-Install Adobe Acrobat from the following page: https://adobe.ly/4fawKSe.
Check if that helps.
If the above suggestion does not work, please collect the logs using the diagnostic tool and share the log ID with us.
Feel free to let us know if you need any help.
Thanks,
Meenakshi