does it work with multisites

I installed the plug in on the network admin area of my site, which has 4 broadcast multi sites. After installation and activation the Woo Stickers does not show up as an option in my settings – in either the main admin settings or any of the 4 multisite settings. So, I am wondering if the plug in perhaps doesn’t work in a multi site environment? It’s possible I may have another plug in conflict too. Can you advise?