At the end of a match on the overview there is a bar telling me my ip points earned that match. In the bar there are 3 parts (won/lost game, matched game bonus, and ip boost). When i bring my mouse over ip boost it says not enabled. This is making it hard to earn ip points and buy new champions and i don't know why this is happening. So if anyone knows what is is and how to fix it please tell me. Thank

Depends on whether or not you have bought an IP booster from the Riot store, or still have one active. If either are the case, then go to the IT help forum, otherwise, you need to buy some Riot Points and buy a booster.

IP Boost is a bonus that you have to actually purchase from the store.

Yeah it's just showing you how much more IP you would get if you had a booster.. It's marketing, basically.