Our users use our website mostly to track gas mileage on their vehicles. Most users very seldom post any topics to forum.
We have not heard from anybody else who experienced same problem as you have had, it appears that our site has incorrectly recognized your Macintosh system as mobile browser and provided only limited functionality to you.
We apologize for the problem, it has been fixed and you should be able to see full version of the site now.
Thanks and have a nice day!