The Greek version of "I'm a Celebrity...Get Me Out of Here!" is known as "I'm a Celebrity...Get Me Out of Here! Greece" or "Celebrity Splash!" in some seasons. However, I couldn't find specific information about Season 19.
Check the SKAI TV (Greece) official website. They typically host full episodes and highlights of their reality programming. The Greek version of "I'm a Celebrity
The confusion likely stems from a mix-up between the original British series and the Greek adaptation: The Greek version of "I'm a Celebrity