Exporting Interactive PDF not working.

It appears as though there is a large form field on the page. This form field will obscure text and graphics below when viewed in Acrobat.

Are you on a Mac?

If so, did you just upgrade to Catalina?

If so, roll back to Mojave. See these other posts about Catalina problems:

• https://community.adobe.com/t5/Acrobat/When-Will-Adobe-work-with-Catalina/m-p/10667064#M221881
• https://community.adobe.com/t5/Acrobat/When-will-Acrobat-DC-be-updated-to-Catalina/m-p/10657202#M217...
• https://community.adobe.com/t5/Acrobat/Catalina-update/m-p/10658127#M221289

Some ideas:

1. If you used layers, flatten/merge down to just one layer.
2. Did you use the File / Export / PDF(interactive) utility?
3. In the export settings, is the option to include forms and media checked? (see screen capture)

I think you must be missing a vital stage in creating the interactive PDF. I suggest you set up a new test document with just a couple of text fields and go through the steps and see if it works (or doesn't) till you track down the issue and you can apply it to your original form.

(I suggest you make a copy of the original InDesign form so you can return to it for any subsequent updates.)