I’ve noticed it’s random when the notification sounds work and don’t work. It was the same way in my VW GTI as well. I usually mute them anyway if I’m driving by putting my phone on silent.
Congrats on getting it back! I don't think that bumper is mounted properly though. You should have that checked. Hopefully you can get a new headlight soon as well.
Very. The film pulls off fairly easy with a heat gun but the adhesive, that’s the hard part. I’d do a film change after five years. Two years is way too short. Sounds like a sales tactic.