Fillable pdf file with submit button not working

We have a fillable pdf form with a submit button. It is configured to send to a specific outlook mail address. The pdf file is stored in our sharepoint library. If our user goes to the library and open the pdf file they can fill out the form but the submit button does not function.

I have figured out a temporary work around. I am having them download the file to their computerr. They can fill out the form and submit as intended.

What needs to be done so they do not have to download the form?

Thanks,

Deb Conway

Indiana Farm Bureau Insurance