In my experience, posting in english usually gives me more answers.
I looked at the comments on my project and indeed there was a comment that said that the SDA (A4) and the SCL (A5) should be plugged into communication 20 and 21 respectively.
Now, there is still the problem of the timer that cannot be restarted when there is less than 1 minute on the clock.
In addition, the project dates from 2021 and the last comment from 2022. I have little hope of being answered, but I'm going to give it a shot anyway.