Text won't display over background box

[Orange Solar24643542q368]

Hello, I am trying to simply write text into this document, however when I add text to the page it hides behind the blue box. This pdf was originally downloaded online, and I was able to add text once before (you can see the text I added yesterday in the above blue box). However today the document was unable to be edited due to a password protection (which wasn't an issue yesterday?) so I used a password bypass website and now this problem is happening. When I try to bring text to front it doesn't work and I seem unable to select the blue box in order to move it to the back. Any help is appreciated, thanks.

[Bernd Alheit]

Use Tools > Prepare Form and you can reduce the size of the form field. 

[Orange Solar24643542q368]

Is there any way to keep the size of the field but allow text to display over it?

[Bernd Alheit]

You can enter the text in the form field.