https://play.google.com/store/app…playcredi
Credit applied after first billing.
Terms can be found when click on "More Info" link on the app download page. I C/P the following texts:
"LIMITED TIME OFFER: Get a $ 15 Google Play Credit when you sign up for HBO NOW.
*Valid for one $ 15 Google Play credit. Promotional offer is for new subscribers only. To qualify for the promotional credit, you must have (i) subscribed to the HBO NOW service via the Google Play platform between January 31, 2019 at 07:00:00pmEST and February 10, 2019 at 06:59:59pm EST, (ii) completed the 7-day free trial and converted to a paid subscriber, and (iii) opened the HBO NOW qualifying email that we send to your HBO NOW account email address by February 25, 2019. Once you’ve qualified for this offer, HBO will send an email with a $ 15 Google Play credit to your HBO NOW email address by March 3, 2019. $ 15 credit is not reloadable and has no cash value. Credit must be added to a Google Payments account by 7/16/20. Once added, credit must be used on Google Play by 7/16/21. Credit may be applied towards qualifying products on the Google Play platform. Valid in US only. Limit 1 credit per subscriber. Must be US resident, have Internet access on a compatible device, and have or activate a Google Payments account. Age restrictions apply. See Google Promotional Code FAQ here for additional details: https://support.google.