Check your casino account to use the bonus.
The bonus might be valid only for certain players according to the bonus terms and conditions.
All the luck!
I just signed up at Winward casino through this link and I did not receive the 77 spins, what I received instead was $65!!! Cant complain about that! Not sure if the wagering requirements will be the same as the spins but if it is, then its very possible to wager through the bonus easily.