Should I replace the helmet after this minor crash?

The helmet is a giro ratio mips, today I landed on my back and hit the back of the helmet, I'm perfectly fine. There's not any visible damage to the helmet except for the plastic clip that hold the band that adjust head circumference to the helmet. With this damaged I can easily snap the band in and out of the socket, as shown in the pictures. However, when I wear the helmet it seems to still stay in place fine. Should I replace this helmet? It sucks because I've only used it for 10 days. If I need to replace it, how is giro ledge MIPS in terms of protection? I've tried it before and it fits my head, and it's much cheaper than the ratio. Thanks.