They kept delaying the residency registration process, and only sent one after numerous reminders. It turned out the residency card information was incorrect; the information is directly synchronized, so multiple errors are impossible. It seems they were unwilling to provide the residency card.
Upon arriving at the booked hotel, they said they needed to change locations, which didn't match the booking information.
This youth hostel is located in the city center, not far from Republic Square and pedestrian streets, fortresses, museums, and famous churches. I stayed in the girls' room, which was small with many beds and almost no space. It was clean. However, several compatriots reminded me not to put food in the refrigerator, because the staff would steal it and even eat it all up 😅