Radio or check buttons that work on iPad

InDesign
1

Have created a form using InDesign and exported as an Interactive PDF.
Radio buttons DO NOT work on my iPad. They DO work on my desktop computer. The buttons are set to “On release or tap”.

Any ideas? Thank you

2

Interactive PDF depends on the PDF reader application.
This is not a scripting issue, and frequently discussed in the U2U forums.
The typical answer refers to other solutions, e.g. HTML.