Numbering order (left to right)

If you don't use inDesign's ME version (which supports left-to-right and right-to-left binding), then you can use this one-line script to change the document's binding direction:

app.activeDocument.documentPreferences.pageBinding = PageBindingOptions.LEFT_TO_RIGHT;

Looks like the ME version - maybe it was used previously for the document. 

You're in right-to-left mode, you need to change the binding direction.