Do I need to wager the bonus also or only my deposit?
The quick answer is YES, you need to wager the deposit + bonus.
In a deposit bonus on Chips.gg the wager multiplier applies to your deposit and the bonus % you received.
For example, lets say you are enabling the following deposit bonus code:
And you deposited 55$, in this case you will need to wager:
(Deposit + Bonus %) * Wager
(55$ + 200%) * 40
(55$ + 110$) * 40
165$ * 40
6600$ (Wager required)