Hi uarmm18,
Thanks for reaching to us.
1. Revolution slider come bundled with our theme but they can’t be activated with our purchase code. Actually, you don’t need to do this. Only in case you want to get premium support from its author, you can purchase it from Codecanyon. In general, you can create a slider without a key, by default, you have access to all functions of the plugin that are needed to create a website similar to our demo.
2. Regarding WoodMart Slider responsive, you can go to Dashboard > Slides > Sliders > there edit your Slider > under that you can find the option to define Height accordingly for the Desktop, Tablet and Mobile: https://snipboard.io/UHLEMv.jpg
And edit the slider responsive setting in the page builder.
Further, you can read more about WoodMart Sliders here: https://xtemos.com/docs-cat/woodmart-slider/
Regards,