Bad Clock Messages
If you see a message mentioning a "bad clock" which prevents you from joining events, this means that your system clock is out of sync with the server time. Allowing your device to automatically set your clock or manually setting it to the correct time should fix the issue. The option to do so is usually found in the Time & Date section of your device’s settings.
If this is not the case, please get in touch with our support team at firstname.lastname@example.org.