I cannot figure out how to render as 4096x2160 in LRTimelapse 5, is there something I am missing? could we have it added into an update if it is not available. Videohive requires me to have a 4096x2160 file. Thank you for any help.

You need to set the right crop ratio in Lightroom. Create a new custom crop ratio in Lightroom, set it to 4096x2160. Set the crop.
Export via LRTExport and render in 4K (not 4K UHD) from LRTimelapse.