Unable to Submit Form when in Mobile View

Recently I have faced another problem with this form.

I do not know why this form is not working from MOBILE PHONE. When I provide input from mobile and click on the POST button then it is not submitted and Responses is not show in the submission list.

And also some time(it is not always) when I try to use this form from the computer then this same problem occur.

Please detect the problem.

I made a test submission using my phone (Android) and was unable to reproduce the issue.
My question was displayed in the list right after I clicked on the Post button.

I was also unable to replicate it in my computer using Chrome.

Could you please let us know which mobile device are you using for your tests? I also suggest that you clear your browser's cache in your phone/computer to see if it helps.

Thank you.