Hi @qelsey,
Thanks for writing in.
Record not found means that you did not create a slider yet to where you assign it. You need to create first slider in order the slider will be shown.
In regards to the activation,
Please do check this article:
https://theme.co/apex/forum/t/extension-revolution-slider/71
There is no need to register your license for Revolution Slider if you happen to have one. In fact, doing so is discouraged in order to prevent any potential conflicts when updating, as previously mentioned. If you happen see a notification in your WordPress admin panel asking you to register Revolution Slider upon activation, simply dismiss this notice.
Let us know how it goes.
Thanks.