Nope, there should be no need to install a fresh copy. We've installed the latest version and configured the device according to the network settings you requested in your application (see email). You should be able to connect to the device with the given IP.
In case your local network configuration has changed in the meantime, I guess the easiest solution is to re-install the firmware to the SD card as described in the manual above. The other option would be to create a temporary local network using the same IP address range as the old one and then connect and re-configure the device via SSH.