When you, your brother, and anyone else you are having Jami conversations with have updated Jami, please check that the Jami version name is “Εἰρήνη” by clicking the “About Jami” button.
The blog article entitled “Together”, the new version of Jami and a new step forward was published on October 16, 2020:
If you are planning to have group audio or video calls, everyone will need to enable the (Experimental) Enable call support for groups toggle found by clicking the Open settings button. A screenshot can be found by visiting:
Thank you