How do I use Chatty to send messages in a group chat? [2025]

Hello everyone!
I am having some issues sending group messages with Chatty (depicted below):

Is this functionality avalible with Chatty? Is my hardware faulty?

Hardware: TPE-USB4G2US
Provider: AT&T
Version: v0.8.5 Flatpak

Thank you all so much for any help!

If you don’t get a response here, you can also try asking in matrix channel.

https://matrix.to/#/#chatty:talk.puri.sm