AMEX OFFERS 4x Points at AMAZON up to 1500 points until 12/31 (account specific, not all have offer)
Log in at www.americanexpress.com and clip offer if you have it.
Another possible offer available
Get a $5 statement credit by using your enrolled Card to make a single purchase of $25 or more online at Grubhub.com or through the Grubhub app by 12/31/2019. Limit of 2 statement credits (total of $10).