Check the message shown in the app. Codes can be replaced, links can expire or reach their usage limit, and protected clubs may require a password or approval.
Step by step
- Check your connection and make sure you are using the right account.
- Copy the entire code without extra spaces.
- For a personal invitation, check the username it was sent to.
- Ask an admin for an updated invitation or approval of your request, depending on the club's joining rules.