Comodo Firewall

Hi I am brand new today on here so please bide with me I am not very computer literate ???
I have just noticed my firewall did not seem to be on? so I went into all programmes and clicked on comodo and it came up saying it was active but seemed very sluggish and all the boxes where at zero, but it started working, but on trying to get it updated, three attempts it gets to 117% and then an error message saying the internet connection had failed? every time, can anybody help me get passed this problem please??