In fact, I couldn't travel. In September, the German government relaxed entry into the country. I bought the ticket, booked the accommodation. However, a week later, they backtracked and banned people vaccinated with Coronavav, and I couldn't travel.
I sent a message to Luísa explaining the entire situation, and requested a change in the booking dates. She ignored my message and simply declined.
I made a new change request, and sent a new message. After a lot of insistence, she finally replied that she was sorry and that she couldn't fulfill my request, because there was no vacancy in the month I had chosen, which was not true.
Finally, after practically begging that without her help I would lose all my money, I placed a new change order, which she didn't even respond to.