metatrader 4 app crashing after entering a group chat

[mohammad.mohammadi.gh]

hi

I've just updated my metatrader 4 app on my android phone to built 1231 and when i try to entering my old chat groups it crash and throw me out of app!!

on the app i can chat with people individually but on the group it crash...

i try to delete the previous chat group and create a new one. at the beginning it goes well and i could enter the group and send a comment and receiving, but after adding several people to group and after an hour it keep crashing again!!!!