@Lambsy65 I guess this is the offer wall the release note refers to.
I copy a statement over from subreddit regarding this and share with you all.
New Feature: Offers and the Offerwall
The Offerwall is a new feature that allows players to voluntarily opt-in and engage with advertiser offers in exchange for rewards - coins or gems. This feature is an optional feature for players to engage with and is not required to progress in the game.
Offers will appear alongside the option to Watch an Ad (eg, for coins, or gems). Players will be able to choose to watch an ad or view and complete an offer displayed. Upon completion of an offer, players will receive a notification message regarding their reward. It may take up to 72 hours to receive rewards after completing an offer.
Please note that rewards and offers are not managed by the development team or any PopCap or EA related team. For any issues related to offers, please contact Tapjoy directly (https://www.tapjoy.com/faqs/submitting-a-customer-support-ticket/), and NOT normal EA Support.