Please provide your hub model (C7, C8, etc.) and its platform version from Settings>Hub Details.
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Not sure if you inadvertently changed things or how it would have worked initially with the setup as shown in your image. You have told it to turn OFF the light when the rule is activated.
Try clicking on the red "OFF" circled in my image below and it should change to a green "ON". (PS... if you clicked on that while it was green before the issue occured, that is how it could have inadvertantly changed)
The box is so that you can specify the condition for individual lights on activation.
If you are using different settings for different modes (or time frames, or several other ways to set up different schemes with the same lights), you might only want some of them to go on when the rule is activated. I actually do this with my hall lights. ALL my hall lights come on during the day and early evening. However, at night, they do not.