Unlike most other "products" on bko, for Telepathy the voting mechanism seems disabled. Reproducible: Always
Thanks for the report. That's not actually deliberate, I'm not sure why it's disabled. However, I have no intention of trying to change this. As a developer voting provides absolutely nothing useful to me at all, at best it just provides a false illusion to users. If a bug in KTp is marked as NEW we are going to implement it when we have the time to implement it. We don't need other users to tell us.
For anyone else looking it's Admin->Edit Products->Telepathy "Maximum Votes Per Person" this appears to have been deliberately set to 0