Synapse 3 wont install

So i had an update for synapse 3.0 but it failed i tried updating but it kept failing so i deleted synapse and reinstalled it but when the installer was almost done it kept failing while saying insufficient disk space while my hdd has more than enough space to download it. its been a week since i cant use synapse making my keyboard almost useless with lights being stuck,some being off making it hard to see and macros not working