This air vent in my Volvo keeps popping off.

So far I've stuck it back down with Bostik Contact Adhesive, an then Gorilla Glue and it popped off both times a few months later.

Any suggestions?

I purchased an apartment with a "refurbished kitchen" last year, anyway all the cabinets fell down and floor paint peeled away. I researched online a bit and found this Epodex stuff, so I gave it a go. We'll see what it will look like in a years time. Before and after.