Razer Deathadder chroma spec page inaccurate - no Synapse 3

I recently switched from using Synapse 2 to Synapse 3 because I got a new Razer Tartarus Pro that only supports Synapse 3. I currently use a Razer Deathadder Chroma as my primary mouse, and I checked the support page ( https://mysupport.razer.com/app/answers/detail/a_id/3674  ) and it says 
Razer Synapse Support | Razer Synapse 3 enabled

But when I open synapse 3 it shows the Deathadder Choma as a legacy device that requires Synapse 2. Is the support page inaccurate, or do I have to change a setting somewhere to get Synapse 3 to properly support my mouse?