Owned this trimmer for around 2-3 years now and issues started showing themselves right around the end of my warranty (cant say specifically). I've broken my 1mm-2mm blade guard by trying to get it to stay on the shaver head. The little nubs that hold it on, dont do a good job after some use. I think the plastic loses some of its tolerance and becomes a bit stretched. I've even had the guard fall off while cutting my beard (yes, it did mess up my beard atleast once). I'm currently looking at 3d printing my own beard guard because the ones sold alongside this trimmer are quite frankly garbage. It's an actual struggle to get them to stay on. The trimmer itself works great though.
It also costs 13$ CAD to replace the guard, then another 14$ to ship it..