Is there any advantage in participating in the ICO than just waiting for the product to launch?
I dont think you will be able to buy Tokeneo tokens after the ICO period. So it would be better to participate in the ICO itself plus they have discounts going on as well during the ICO.
Are there any risk factors in investing in your project or the token sale?
In general, ICO's and Token Sales do have various risks as with most investments i would advice you to properly research and read about the project and their whitepaper before investing.
Will there be an additional issue of tokens after the ICO?
I dont think they will have any other rounds of issuing tokens after the end of their ICO. So i'd suggest if you are looking to buy their tokens, you should do it now. They are offering discounts right now as well.