Hello, are you able to make it so that saves transfer automatically? As it does for some games but not all, not sure why though. For example, The Wish v0.42, my save from v0.41 did not pull across and I cannot do the manual export and import. I play on mobile, so I don't know if this makes a difference but when I select the full screen option, it creates a new tab/web link for the game. Therefore, when I'm out of full screen to export, it reads it as no saves, as the save is in the full screen link. Not sure if this is just a mobile issue
Hello.
It's probably because you're playing on mobile in a browser. RPG Maker web games save data in the browser storage tied to the exact page link. When fullscreen opens a new tab, it counts as a different page, so saves don't show. That's also why saves may not carry over between versions. It's a browser limitation, not really a bug.
You can try playing without fullscreen, always using the same link and browser, or switching to a PC if possible.