RedZetroc18 are you on desktop? if not (aka on mobile/app), try desktop since I know that it's a bit less buggy. you can also try deleting cookies/cached images & files, refreshing the page, and also, (this sounds really stupid) making sure your image file is 600 width and 800 height.
if it still doesn't work then, it might be because inkstone is recently going through changes and there might be a few bugs because of that. wait and try a few days later.