Submit button is not visible with the new card layout form when viewed on mobile.

Hello,

In my form, when my employees use the form on a computer, they can see and select a "submit" option at the end of the form but when they go through the form on a phone, they do not have a "submit" option. How do I fix this?

May I know what device model / brand are they using that time? I've tried this on my Android device and here's what I see:

Are they using an iOS device? Looking forward for your response.