Hey, can you please provide more details for you case? Which device do you use (OS and browser)? Do you play on Itch, or download the game? Do you see the blank screen only when you try to load, or immediatey when you start the game? And, do you load from file, or from a save text string?
Ah, if it is an old save data then yes there is a chance that it will not load. Can you send me the full save text using the feedback form? I will try to figure out why this happens.