My time runs out while it my opponents move

A few times I got a message my opponent I trying to reconnect. Than suddenly I run out of time, while it is my opponents move???

This is because your Internet is lagging. Your opponent meanwhile moved but you can't because of the Internet and so you run out of time. I hope to have answered your question :)

It happened with me too while I was playing simul.

Yesterday t happened to me in a tournament.

Does anyone know how to contact the site administration?