hELP! Design sizing dosn't match grid

Hey there,

Hoping someone can help me out here. I can’t seem to cut out the correct size i want.
For example I set a design of a square to 5x5 inches, but it shows as 3.5x3.5 inches on the grid and when exported it cuts to 3.5x3.5.

Not sure why this is happening, it’s been working fine for months then all of a sudden :frowning: