Instructions said there was a 1.5 liter restrictor in the box and we purchased 2 sink combos but it wasn’t included in either. Can we get them?

VIGO bathroom faucets are already set at 1.2 gpm. For the 1.5 gpm aerator, you would need to contact VIGO Product Support at 866-591-7792, option 2. Once you receive the aerator, you would just unscrew and remove aerator from spout and swap aerator inside of the ring.