Hello, after i installed mattermost in ubuntu OS (normal installation, not docker compose), everything is running ok, but the notificacions are not working. When someone sends a message to each other, a notification does not appear, neither if im using browser environment, neither in desktop app or mobile app. On the smartphone app it always appears a advice icon on the top of the screen and when you tap it it says the the server cant receive push notifications for an unknown reason. Im also running the system with HTTP only, can the switch to HTTPS solve the problem?
Can you guys help me out?
Thanks in advance.