Not exactly sure what's causing it so I'll give some. The description of Vortex ID says ** ONLY WORKS FOR 6, 7, and 8 digit dungeons! ** Which means quests don't work for vortex IDs. (except for ishgria maps I think)
2. If you are getting Unknown Item Type Detected, turn off infinite items until you are actually in the quest, then turn it off after you complete the dungeon.
3. If the game pops up with an error that has every letter in capitals and _ or just plain crashes, you can either reinstall the game or go to settings and there should be something related to refresh files (a.k.a reinstall almost everything)
4. If none of this helps, send gumi support an e-mail. You might have just encountered a bug that no one else has.