I'm not receiving any email lingqs or notifications

For the last 10 days, I haven’t received any emails with flash cards or notifications that I’ve signed up for conversations. I’ve written 2 emails for help, but no one has responded.
Does anybody know what I can do?

@michal - sorry about that. Actually, I have responded to you both times (June 10 and June 12) Please check your spam box as sometimes emails go to spam. Let me know if you have received my emails.