Hi there are a few browsers with export problems at the moment (Chrome, Brave, Edge). To get your save data you'll need to enter the console by pressing F12. From there select the "Application" tab on the top of the console panel (You may need to press the ">>" indicator to see it". Then navigate to Storage -> LocalStorage -> Entry ending in ".hwcdn.net" -> Double Click the value entry for Lootun Save Data (Should look like a string of random letters /numbers or a base64 string for those familiar) and copy that with ctrl + c.
Sorry for the trouble, i'm working to get the export up and running in these browsers asap.