How can I continue the chat session please?

Hello, I have got adobe application manager installing issue. I have been chatting online with one of the expert, but the line has been cutting off because I pressed Ctrl plus R instead of Press window plus R during the process. So the conversation is over. How can I continue it again. I could not open the chatting option now. It said: 'Please quit and restart your browser to start a new chat session.' But I did restart my browser and computer, it did not help me to continue the chat session. I did call the hotline, but no one answer it. also, I did receive the email from the expert. but I could not contact him/her back. How can I do now please?