May I ask what operating system you are using?
Discussion
GrapheneOS. Checked the OS settings to make sure notifications for keychat are enabled.
Also today Inoticed, in the group chat settings, I played with the settings and disabled notifications. Now when trying to switch them on I get an error
Sorry, the current KeyChat notifications require Google services, so GrapheneOS cannot use them. We will add Unified Push later. Thanks for reporting the bug.