I cannot do anything

[AnneNymus]

Hello, I wanted to test and review your game, but all I can do is walking down the snowy road until I arrive at this house. I rang the bell and absolutely nothing happened after that. No other way to go. No hint to press any buttons or to click anything... I guess I am just stupid but I am stuck after 3 minutes. What do I do?

[raindog84]

Look under the door. There is a floor mat...

[AnneNymus]

Thanks, will try :D