Are you a Groupon Member with a Voucher to Redeem?
Follow the Redeem Instructions on the Voucher:
For Verification, Send a Text with: (1) Your Name and (2) Groupon REDEEM Code, as shown on your Voucher (The Redeem Code has just 5 or 6 numbers, not the Long Voucher Code of 16 characters).
You should receive a reply text almost immediately with a Discount Code and Instant Sign-up Instructions.