I can't see my data

A car, a lead, or an order you know exists isn't showing up? Here are the most likely causes, in order.

Check, in this order

The first two causes cover the vast majority of cases, and are the least obvious.

Is the right branch selected at the top of the screen? A car added on one branch never shows up on another.
Are you on an Admin account? Then you only see your own branch, never the others — see Branches: who sees what. That's the rule, not a bug.
Is a filter or a search active on this page? A forgotten filter hides results that do exist.
Could the item be under a different status tab — for example a car already marked Sold, or a lead marked Converted?
Was it simply deleted? A deletion is permanent and leaves no trace.