On January 2,2018 I responded to GrubHub's ad that said a $7 discount will be credited to my first purhase.
I chose a Thai Restaurant and was horrified as the ordering process was plagued with various "re-sets" because the delivery price and/or the minimum purchase price kept changing.
At the end of the transaction, the two dishes I ordered amounted to $31.94! This included an $8 "fee" and a 4$ gratuity.
THe checkout process had absolutely no options to gain the $7 promotional credit that enticed me to order to begin with.
At the end of this horrible experience, GrubHub sent me another ad for my next discount.
What a joke.