Dynamic Lighting and Co-GMing a game

Hello my friend and co-GM started a campaign and although I've been added to his campaign as a GM, I can't add Dynamic Lighting (I'm a supporter, subscription is up to date etc.) Do we both have to be supporter level to do this? I'm using Chrome, and i can create a new campaign and have dynamic lighting in that, just not the current one started by my co-GM. Thanks in advance for your assistance.

The creator of the campaign determines which options are available. So if you're a supporter and create the campaign and then invite in your non-supporter friend as a Co-GM, both of you have access to the lighting tool. However as you joined a non-supporter created campaign as a Co-GM, you wont have access to your supporter tools. hope this helps

Thanks Spacehopper.