When calling for an SOS, a message in Polish is heard!!! If it doesn't change somehow, then it simply should NOT have been released in the Greek market. The menu is in Greek.
If I find a way to solve the problem, I will come back.
Update January 2024: Apart from the above, the mobile phone works fine. Sometimes, it freezes and consumes the battery very quickly, but it can be fixed by restarting. It's a shame that there are no more well-known phones that offer this very useful function for the elderly.

Update July 2024: It stopped calling from the bracelet to the mobile phone and I assumed that the battery of the bracelet may have run out. According to the manufacturer's instructions, the battery is cr2025, but upon opening it, I saw that it is cr2032. It doesn't work with the 2025, it is thinner and doesn't make good contact.
Finally, by resetting the settings of the mobile phone, it started working again with the old battery, but now the siren goes off every time it makes a call from the bracelet, while it didn't do that before.