I have a Condenser Mic, phantom power, a sound card, and a preamp designed for ribbon and dynamic mics. I bought the Preamp thinking it would work but apparently it draws power from the phantom source, which means the mic isn't getting power. Would adding two phantom powers, one before connecting my mic to the Preamp and one after the Preamp work? Or will I have to buy a preamp with its own power source? I attached an image in the product description which seems to imply the Preamp can't work with condensor mics because it blocks the flow of and uses power from the phantom source
This is common among inline preamps; if it consumes phantom 48V, it won't pass it "upstream" to the mic or other equipment.
You shouldn't need a new phantom power source between the preamp and audio interface as long as the interface is powering the preamp well enough. But you will either need a phantom power injector between the preamp and the condenser mic, or you'll need to swap the preamp for a DC-powered one that can provide phantom to the mic.
I will say it's unusual for an audio interface to need extra help boosting the signal of a condenser. I've dealt with interfaces that had trouble with some of the less sensitive dynamics like the SM7, but most condensers are pretty lively. Have you tried just running the mic directly into the interface (you didn't tell us exactly what that was) and seeing what you get?