Why can't I see the 'submit' button or other features of a call?
First and foremost, please use EntryThingy on a web browser on a proper computer. We are not optimized for mobile browser, and so often times certain aspects aren't appearing correctly. Your art and submission should be important, you don't want to be doing it from a mobile phone!
After that, please try using a different browser or clearing your cache/cookies. We have yet to see a call complaint that wasn't fixed with these steps!