"Learning English" group is not working! in my laptop. :(

"Learning English" group is not working in my laptop from two days. I have tried to chat in this group by another laptop. But I am still facing this problem. Idont know what is going on with me in this group. What can i do now.? I can chat in private but in group. :( I am hardly  missing my friends and can't practice English properly as well.  Please help me to solve this problem.  @italki.com....