If you've lost your save entirely and you've played a lot, I can try to create a cheat code to start at a specific game state just for you. Please tell me what progress details you remember (such as level, resources, etc.).
Hi! I've uploaded a new version. You can set a cheat code in the settings menu to adjust your character's level to 475. However, you'll need to refresh the page after you do it; there's a bug I couldn't fix yet. Your code is "trul475." Yes, I know anyone can see and use this to override their progress, but I've created it exclusively for you.