In the quest "Trails of Tianqiu" Once you start the quest, it disables the Co-op feature until you complete the quest without any warnings. Many people use Co-op to get materials to continue with the game and disabling it without warning can get players stuck, messing with their mental health and motivation. I looked on media and found that this has been a problem for almost a year, and to no avail, Mihoyo has not spoken about it. I think its time to re-enable the co-op and add a feature to abandon quests. Ive spoken to multiple players and they have all given feedback such as being discouraged, they quit the game alltogether and even players who have ADHD and other neurodivergent disorders have trouble with it as well. They get stressed, feel useless, hopeless and helpless. The quest in question is extremely hard to complete as it has time challenges and multiple monsters that have to be defeated in that time range. Genshin Impact players are tired of Mihoyo not listening to their players giving feedback about the game and choose to ignore them. Most players have friends they get into co-op with to get artifacts, character EXP materials and level EXP. Taking that away from them suddenly is making them discouraged and feel very emotional. Its time to make a change, Mihoyo.