Badoo, like most dating apps (Tinder, Bumble, etc.), uses a "freemium" model. While the core experience of swiping is free, the ability to see exactly who has already liked you is a gated feature.
While the trick is a fun way to peek behind the curtain, Badoo is constantly improving its encryption to hide these images on the server side. badoo unblur
By showing you a blurry shape, the app creates a "curiosity gap" that encourages you to pay to satisfy that itch. Badoo, like most dating apps (Tinder, Bumble, etc
If the hacks feel too technical or risky, you can still see your likes using these "white hat" methods: like most dating apps (Tinder