Do you have an itch or steam version?
Please try deleting everything in this folder, this might fix auditions for you:
Win: C:\Users\*username*\AppData\LocalLow\Glitch Pitch\Idol Manager\data\cache\portraits
Mac: ~/Library/Application Support/Glitch Pitch/Idol Manager/data/cache/portraits
Also, I don't think it's your case, but this could help too: https://img.itch.zone/aW1nLzI3MzUyMDEucG5n/original/SAD%2F2A.png