If a Greek version were actually in production, it would be announced by major Greek networks like SKAI or ANT1 [5].

If you are looking for the UK or Australian versions of the show, you can find them through official, safe channels:

The I'm a Celebrity franchise is owned by ITV and has been adapted in over a dozen countries, including Germany, Australia, and France [4]. While Greece has a very popular version of Survivor (often filmed in the Dominican Republic), the jungle-based I'm a Celeb format has not yet been licensed for a Greek cast or location [2, 5]. How to Watch Official Seasons Safely