The auto-detect function can be enabled by removing the data-slug parameter from the track button code. The tracking will then be initiated on the basis of your courier settings and carriers that are not activated during auto-detect will be excluded.

🚛 Define courier preference

Go to AfterShip courier settings > Disabled tab
Enable required couriers

🔓 Enable auto-detect feature

Go to track Button settings > Enable Auto-detect under Public account
Add the Track Button code to your store

For your account (username.aftership.com), the Track Button code by default does not contain the data-slug parameter.