The best way to know if your account is activated is if you see a new column in your FB Ad Manager.
Access your members area at this link to see the steps how to customize column and see "Amazon purchase zontracker" [or similar names]
You must change settings to customize column to see the new column (can select all Total, Value [Amazon $ purchase amount], Cost).
If you don't see the new custom conversion, you may be in the waiting/processing period for account activation.
Submit customer support ticket if it has been longer than 4 days weekday or weekend (or longer than 2 days for Priority activation upgrade).