I went to join a mushroom and it said i had no tries left but i had not used them i had to use a ticket to join the mushrooms
A mushroom requires a ticket either because “you have used up your free day’s quota” or because “you have already participated in at least 5 people at that mushroom”.
If you haven’t used up your free quota, then you have already attended at least 5. Note that even if there are less than 4 people on the Otsukai screen, there may be more than 5 by the time you press the Go button.
If you see a message that requires a ticket even if there are less than 4 people, it is a bug and you should contact support from the app with a screenshot of the evidence.
Translated with DeepL.com (free version)