One small point that should help avoid considerable confusion in the future… It’s best to recommend that everyone get to the IDE through the universal sign-on URL. Nothttps://graph.api.smartthings.com/
The reason is that different people have their cloud account on different “shards“ so some people trying to follow your link will end up on a screen where all of their devices are missing.
If instead, they use the universal sign on URL, it will automatically direct them to the correct shard.