It should do as Pure do have the functionality to inherit your already installed Aclara S2 meter. It might be that they have a backlog and are working through them or your meter has lost wireless communications.
Are there flashing lights on the Comms hub (sat on top of the electric meter)? Are they flashing quickly or slowly?
I'd send a message through Wattbot for the PP team to have a look at the smart gain as they should be able to operate inherited smart meters now. It's just their own installations they're currently trialling.