I'm wondering how it is you're trying to add/adjust the setup information... there is a button in the upper righthand corner of your diary page that says "settings" - if you click on it, you can change anything about your setup .... you can change lighting, date of germination, number of seeds.... pretty much everything. When I start a new diary, what I've noticed is that the smiley face doesn't appear until I record the date of germination....
Good luck....