When I tried to upload my little game for my one-armed friend today, I got the error that it is wider than 800px. So I went into my project file and set it to 799x799. I tried to upload again, same error...what am I doing wrong? :(
Have a look at the file if you want:
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When I load my game the first time it worked but had a problem, so when I made a change, it never worked anymore, just a black screen