Hi @nadiawks and welcome to the forum.
I've tested the snippet with the exact same text and shortcut as yours and I haven't had any problems.
Here are a few things you can try:
- Make sure you have the latest version of the Chrome browser
- Uninstall and reinstall the extension
- Play around with the "Typing Speed" setting (faster or slower) in the Options page
On a final note, what operating system are you on?