The vive index seems to have some issues at the moment. We're looking into it, but don't have an index ourselves to test with. Feel free to hop on our discord server to discuss it.
https://discord.gg/CXxSbGm
If you'd like a refund at some point do let me know, I will ensure you aren't stuck with a game you can't play. We'll do our best to get full functionality for the index as soon as possible, though.