You have a great variety of activities and multimedia here @paul-m, and information is broken into manageable sections. The very clear instructions and signalling make it straightforward to navigate. Key language is mainly highlighted in bold, not just colour, which is better for accessibility.
The last letters of some words in your 2nd tabs table have fallen onto the next line. The words can look fine in edit mode, but you’ll also need to check them in Preview mode. It’s a little quirk of Rise!
To embed a British Council link, go in Rise to Multimedia, Embed (ELk Mountains!) and paste in the website’s URL. It seems to work.