Having display issue on mobile with embedded forms

Hello… I have an embedded form that asks the user to upload an image. (I’m collecting expense reimbursement submissions, so I need an image of their receipt). When displaying the form on a webpage via a desktop or laptop computer, it works great… however if the user is using mobile (both tablet and smartphone) the file uploader isn’t working correctly. The GUI for the upload can eventually be manipulated by the user to get to the part where they can select their image… however the actual “upload” button never shows up to complete the upload. Is there a setting I’m missing for mobile embeds or something I can do to fix this problem? Any help would be greatly appreciated, just know that I am a newbie though! Thanks a ton!