Thank you for getting in touch, sorry to hear you are experiencing issues.
The reason your map does not show here is that the map is set to have a height of 100% (of it’s container). Because the container has no other content, or no fixed height, the container has a height of zero. This means that the map will have height as 100% of zero, which makes the map effectively invisible.
We recommend you change that to px (as opposed to %) or give the container a fixed height.