You set up your vehicle to track using the tripometer, then you switched to using odometer readings. Fuelly assumes you want to keep all fuel-ups up to that point as tripometer readings. It looks like you want everything to be odometer readings though, so I just went in and fixed that up for you.
In the future, you might want to head over to the
Contact Form instead of posting to the forum since this isn't something that needs public comment.