Does Blaze work with DuckDuckGo. I’m not able to use it. I did load up Blaze on my new MAC recently
Hi @James_McKinstry Welcome to the forum! 
It should work fine on any website including DDG. What is the error you get? Do you hear any sounds on typing your shortcut?
I don’t get an error - just when I type in, it doesn’t expand.
Can you try this:
1. Right click with your mouse on the page
2. Select the Text Blaze option
3. Click on "Reload Extension..."