FAQ's All | General Q. Can I contact a developer for any question? Absolutely. When you are viewing any developer's work, there is a Contact button on the top right-hand side for you to do so. All you need to do is login as an innovator to contact a developer. Q. What kind of files can I upload for my work? Most common file types, such as .exe, .apk, .zip, .jpg, .pdf, .docx, xlsx, xlsm, etc.