How Come I Can't See My Item?
You came across Jobbox and saw how awesome it is and how it allows you to make money on idle things you own. You've uploaded an item, written a catchy description and selected your day/week/month price. In your rush to see your listing live on the app you click over to the specific category it's listed in only to find... it's not there.
The reason you can't view your listing is because it's your item and there's no need for you to see it as an available item to rent; it would just clutter your searchable inventory. Your item is live as long as you have uploaded your Payout information in your Profile screen.
Now go out and promote your listing by sharing the app and listing on social media.