Unless you update it through Github yourself then I believe you would need a paid plan to auto update or pay your server provider to do it for you

Thanks bro, since i am dolphin license holder, messenger is included, usually i can update it in the past, but don't know why now

If you have auto-update option enabled update should be installed automatically. Otherwise you need to go to Studio -> Apps -> Updates area and here you may find new update. Also please be sure that there is no problems with license and domain. If you previously downloaded and installed module for another domain and now changed it you need to refresh license in you UNA account first.  

I just sent you credentials via messenger