Here I leave the reasons why I had to suspend this reservation unfortunately:
The percentage of the "monthly discount" was entered incorrectly by the Airbnb ad, this means that I had registered 25% and the system entered 49%, so at the time of booking, the guest was given a value Incurably low in relation to the rate that the department has. It was impossible to charge 8 dollars per night plus breakfast, with that value I could not cover all my guest's expenses or receive it in the best way.
Also, I must add that I am a new host, in fact, my ad is visible a few days ago. I did not think that the system could generate an error of this type.
I know that by suspending the reservation I may have generated some problem, but I preferred that, before providing a bad stay to my guest.