Tivo RF Remote Extender and Remote Ap?

I just received my first Tivo setup via Mediacom Cable. I replaced Direct TV.

They told me the new Tivo and remote(not sure of model) was RF and I could use in another room. As it turned out it does not work as they said...
The remote looks like a peanut.
The installer told me to download the TiVo app for iPad. I cannot get any support on how to get it to work?
Mediacom nor TiVo can help. It recognizes my rooms and channles... but that is all.

I apologize as I know very little about TiVo, but I read some great things about the it and decided to dump Direct TV.

Hope to learn more here. PB