One sponsored card appears here while this phone uses the free features. It is chosen only by the app's language and your country. Nothing from your messages, your contacts or this phone is used or sent.
The card is labelled "Sponsored · …" and appears only on the Security tab, never in your messages, quarantine or notifications. It's shown on the free features and while Starter is free with your own key; paid plans have none.
Opening it: tapping the card shows Sponsored link first: who placed it and where the link really goes. The page opens in your browser, outside 1krBlocker. Sponsored links are checked before they appear, but take care with any page you don't know.
Every sponsored link is checked against dangerous-website lists before it appears, and ads can't promote anything risky or pretend to be messages. To choose a card, the app sends only its language, your country and the app version, no identifier.