Security breaches are a nightmare, so getting that email swapped and enabling 2FA is priority one to keep your inventory safe. You don’t want to lose a high-tier skin like an https://cs2.ad/items/awp-green-energy to some random hijacker.
To break past the level 100 cap, you usually need to use duplicates for „limit breaking” or awakening, which is just as much of a grind as hunting for high-float skins like this: https://cs2.ad/items/mac-10-heat