An internal component of the toilet flush and its cover were broken.
I used Titebond PU glue to fix the cover and used a classical technique with a cord to substitute the internal broken part in order to have it flushing again.
It was an old model which parts are not easily available anymore, otherwise I would have to buy a new one which is expensive.
Because it saves money, we can repair things faster and it helps us to understand the functioning of our houses.