Default No notifications from Google Hangouts

Hey guys. For some reason, Hangouts refused to notify me when I get a text. No sound, no vibration, no anything. This has happened across multiple different roms (unnamed, slimkat and cm). I have no idea why its acting this way, and I don't have problems with any other apps notifications. Any ideas what might be causing this?

Sent from my LG-LS980 using XDA Premium 4 mobile app

My Contributions: My Guide on Flashing and Fixing Your SGS4G

Phone: Sprint LG G2
ROM: Nameless 4.4.2 thanks to the nameless team

Phone: Sprint Galaxy SIII(Retired)
ROM: SlimKat thanks to the Slim team

Phone: Samsung Galaxy S 4G(Retired)
ROM: SlimBean thanks to Team Kick Ass

Tablet: Nexus 7 (2013)
ROM: PA 4.1-Beta thanks to the PA Team

Tablet: Kindle Fire(Retired)
ROM: Jandycane