Thanks. This appears to be a Windows 10 IoT image loaded in your RPi. You need to use the complete image from our github page to get everything working, we’re using Debian and, unfortunately, we don’t have any client for windows.
I am not sure how it works with Win10 IoT license, but it may be better to simply get a new SD card (8GB is enough for this purpose) so that you can use this SD card and have something to go back to in case something goes wrong.
Download the latest image from here: https://github.com/angelcam/arrow-client/releases (the rpi version).
If you don’t want to work with console that much, you can use Win32diskimager to clone that image to your SD card. You need to do this via a SD card reader from your desktop computer.
Once this is done, you will insert the SD card into your RPi, connect it to your network, connect it to the power adapter and wait for it to boot
Then you will find its IP address and then access it via SSH (port 22) using Putty.
You will then need to execute just a few commands to expand the filesystem and that will be it.
If you get stuck at any point, feel free to post a screenshot here and I’ll try to guide you through.