Game reset

Hi, I just played a 26k second game on blood moor and was still going strong. I decided to take a break so I returned to main menu and closed the game. When I opened the game again and clicked resume game all my progress was deleted. I was back at stage 1 without any towers, gear and potions in my inventory. My time is not showing up om the ladder too. Luckely my level ups where saved. Went from lv 54 to lv 71 in one run :D Is there anything I can do to get that game back? Or at least something I can do to prevent this from happening in the future? Thanks.