i can't play lol anymore

The occurrence started when i was starting a LOL game,when i was in the champion selection and the game was about to start it got "stuck" in the champion selection.I closed the game because i tough it had crashed,when i came back to the game it had a message saying that i "had left a game in progress" and to reconnect to the game.I clicked the button below this message saying: "Reconnect" but i didn't reconnect.I clicked several times and it still is like this.I asked another summoner to invite me to a game,he said that it said that I was already in a game.I hope that you can help me solve que problem as soon as possible,please as it has passed more then two hours.I tried to close the game and then open it again to see if i could solve the problem but i could not.Thank you for your attencion and I hope that you are able to help me solve the problem