It doesn't make sense to use a library intended for one type of device with another type of device, regardless of whether both devices are called "fingerprint sensors".
RX and TX suggest a serial connection, as does the seller's page. Try using a terminal program on a PC, with a USB-TTL serial adapter.
PC Interface: UART (TTL logic level) or USB2.0 / USB1.1
Communication baud rate (UART): (9600 ╳ N) bps where N = 1 ~ 12 (default value N = 6, ie 57600bps)
If you burned the IC, there is little chance it will work.