Got 1T but missed two other medals... Not only does it not have a way of restoring them, it doesn't have a way to reset save. Not gonna clear all browser cache for this, guess I just wait for Ruffle so I can play on my Mac.
Remember, NG Player is kind to you with disconnect issues but after 5-6 hours or so, it will disconnect. You should therefore refresh every 6 hours or so (unless you are working on 1T and have long way to go), otherwise you end up in the same situation as me.
This game also lacks a "buy many" button and, of course, have the Darkfire Blob xp issue.