I cannot secure my PDF document and need help with it.

As a user of the PDF24 Lock PDF tool, I am having difficulties securing my PDF documents. I am unable to apply the intended password protection feature to my files, to protect them from unauthorized access and manipulation. Despite the user-friendliness and simple interface, I struggle to use the application. My attempts to encrypt the PDF files and thus secure the confidentiality and value of my information have failed. Therefore, I urgently need help to successfully execute this process and to properly integrate the tool into my file protection strategy.

To correctly use the PDF24 Lock PDF tool, first upload your PDF file to the tool. Then select the option to lock or protect your PDF file. Here, you will be prompted to enter a password to secure your file. Enter your desired password and confirm it. The tool will now encrypt and protect your PDF file. Once the process is complete, you can download your protected PDF file. Now, your PDF file is only accessible with the password you have set and is secured against unauthorized manipulation.