adafruit tft display setup quotation

Hi there, I recently picked up an Adafruit 2.8"" TFT display for use with a Raspberry Pi 2. I installed the recommended Adafruit image, updated Raspbian, and everything seems to be working great, but have found the screen is so small, I can"t actually make use of the entire desktop. For instance, when I open a window, it cuts short, preventing me from accessing the lower options and commands. Most of the icons overlap, too. I"ve tried using the ctrl-left-click method to scan across the desktop, but that doesn"t seem to be working. I"ve also tried installing Kodi, but it doesn"t seem to want to load, either. Lastly, I tried changing the resolution settings through config.txt, but they haven"t seemed to have taken effect. Would I be right in saying that a fixed resolution may be hard-coded into the screen itself?