FBM ship dates inconsistencies

Lately my ship dates have been all over the place. I have 7 days set in my shipping properties and my products show the dates 7 days out. But when my orders come in, my ship dates are anywhere from 2 days from now to 7 days from now. I had an order come in last night and Amazon says to ship by Weds.

Anyone know what’s going on or how to fix it?