Lumia 630 messenger problem

[ErolMG]

Hello. I've got Lumia 640 XL dual SIM, and i was happy for one year now. But 10 days ago my facebook messenger crashed.
Had this messege cant connect, waiting for wi fi, and i cant send messege via fb messenger. I got notifications when i recive messege, but cant open it in messenger. I must go to internet explorer, then type facebook to see my messege. Its anoying.
Can someone please help me with this?
Thank you

 

[xandros9]

Are you on Windows Phone 8.1? If you are, you'll need to upgrade to Windows 10 Mobile to use the new Messenger app as Facebook ended support for numerous older versions of Messenger, 8.1's included.