Logitech g305 side buttons not working some times

Hi, so I bought a logitech g305 mouse from currys a few months ago and for the past month the side buttons dont work half the time. Sometimes it works and other times it only works 50% of the time.

I tried using 3 diffrent computers and batteries.

Any help plz?

https://reddit.com/link/yhd8a0/video/psu9kc88txw91/player