Lens cover won’t stay in place

My Eufy video doorbell is c 3 yrs old.

I recently noticed there was water under the glass disc which covers the camera lens and brought the device indoors to try and dry it out.

The lens cover subsequently fell off and will not stay back in place.

On inspection, it seems the “bezel” which retains this glass disc, and keeps things waterproof, has degraded.

The company can’t give me any advice re repair and just tell me to buy a new unit.

I feel this is wasteful - and surely the design life of this sort of tech should be longer than 3 years!

Can anyone suggest a safe way I could secure the glass cover back in position?

The only thing I’ve though of is tracing a bit of glue round the perimeter with a cocktail stick and then pushing the lens cover back in position.