Upload file button for a survey isn't working on mobile devi

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1

Dear friends,

Upload file button in a survey isn’t working on mobile device. It means when I made a survey using open code and tested it on a mobile, everything is ok except the upload file button. It is not working at all on a mobile.
www.kunokalviai.lt/anketa

If you have any solution for it, please tell me.
Yours faithfully,
Konrad

2

I tried it on mobile and can choose images from my mobile or some pdf file from Dropbox or Files using iOS 11. But I can’t really try to submit the form, when I press the button I get to a invoice for 19 €.

3

Working for me on this site (Chrome on Google Pixel running Android O)
Can you please upload a screenshot and give us as much information as possible regarding the device, OS, and browser so we can narrow down the issue?