Lost connection in the game

[Ляжки Гоголя]

I bought this game 2 days ago.When Today I went into the game I was surprised.All my level reset and when I try to find a match was writen:Lost connection,join from the steam.Please help,I don't know what to do.

[Kuchen]

As you progression is coming from steam (level, prop collection, item), they will not show up in the game when there is no connection to steam. This can be due to steam is temporarily down, a antivirus software is blocking steam connection or any other reason what could cause missing steam connection.
Don't worry, your progress is not being lost, it is saved in steam.