Here is the link to my attempt:
(1) How much time roughly did it take you to create the content?
It took quite a while, maybe an hour and a half. There a quite a few things I would like to improve if I had more time.
(2) What aspects of Articulate Rise did you find a) easy to use and b) confusing/less easy to use?
Overall it is quite intuitive, but it took a bit of time to get familiar with the different options. It was easy to embed content from H5P, but I need to spend more time working out how to format some parts, such as reducing the blank space on the H5P exercises.