I installed the app in Firefox, and enabled it, however I can't figure out how to see it.
Thanks for your help,
The app creates a small "TD" icon in the top-right corner, next to the arrow buttons (and reload and home). Also, please make sure that you've reloaded Firefox after installing the add-on.
Why is the Firefox browser extensions not compatible with Firefox 25 beta app?
We do not fully support beta browsers. Most of the time the issues are resolved when the browser comes out of beta. Nonetheless, please let me know what the exact issue is. Also, try clearing the cache for Firefox and see if it works.
It's available as an add on I think but can't install it as it says incompatible
Yes, our current version isn't coded to support the latest beta. We will push updates out that will allow it to work in the near future.