Access to the SD card is not possible. However, if I disconnect the M5Stack module from the Faces-Base, access to the SD card works.

See also: https://github.com/tobozo/M5Stack-SD-Updater/issues/146

The kit was ordered and delivered from Conrad. After the SD card did not work, I complained about the entire Faces kit and received an exchange. But this kit also has the same problem.