STM32F429I Discovery UART5 Data receive

Hello. According to the task of my project, I connect the GY-25 sensor to the STM32F429I Discovery board. The sensor consists of a gyroscope and an accelerometer, as well as a microcontroller that processes the raw data. After processing, the built-in microcontroller sends data in pulse blocks of 8 bytes. I configured the UART5 of the STM32F429I board to work with this sensor. Problem: Sending commands to the sensor is correct, but receiving - with errors. The output format of the sensor is 8 bytes of information, of which the first 0xAA and the last 0x55 are fixed, and the remaining 6 can take any value. Initially, I received data by the value of the flag, then switched to interrupts. Checking for start and stop bytes fails. Either the code received by the microcontroller is not correct, or the interrupt is not working. I am attaching a screenshot with UART5 settings. Isn't UART5 cut down or partially used somewhere else? I forgot to mention that I enable UART5 interrupts in the main program.