Oh no it's the very first line of the game. I was able to identify the trigger. Sending "Get up" doesn't register but "get up" does for whatever reason.
We've gotten the game updated to version 2.5.1, which fixes the issue you found along with quite a few others we spotted while doing some troubleshooting. Give it a shot and let us know if you spot any other problems! Thanks again.
Unfortunately, we have no plans for a non-browser version at the moment. We actually built the game for browsers specifically since we hoped that would make the project more accessible for everyone.