When I am playing a game and leave after saving, the games save file is no longer there and I have to restart my entire game. Anyone else having this issue.
If the game use a local storage the associated data/cookie might be deleted (accidently by yourself or because your browser, an extension/add-on or a programm on your computer did it automaticly because it is set to do so. Yoi have to check and change the settings then). You must also use the same computer/browser.
If it is an online save the data is, most likely, not lost. Often it is a connectivity issue, just try again later.