I uploaded my first game to the Scirra Arcade and it worked fine except that the default play window was extremely tiny with black borders (I'm using Google Chrome Version 64.0.3282.186 (Official Build) (64-bit)). Selecting to go wide screen or full screen displays the game correctly. The window size in the project settings is currently 480, 854.
The game is currently available to play on the Arcade here: https://www.scirra.com/arcade/puzzle-ga ... ower-27649
Here are some screenshots:
Default sized (too small):
Wide screen (the correct dimensions display here):
Any help would be appreciated. Thanks!