I am having trouble uploading custom sounds onto the configurator app. I used Audacity to record the sound at 11025 Hz and exported it as an 8-bit .WAV file. When I try to upload the sound, I get the error message below. I just uninstalled and re-installed the configurator app on the Microsoft Store to make sure I am using the most up to date version but I am still receiving the same message. Whenever I go to the "Sound maker" section it just says "Search" with a loading bar but never actually loads anything. 

Any help would be greatly appreciated! Thanks!