I simply changed the configuration lines to :
#define RST_PIN 6 // Configurable, see typical pin layout above
#define SS_PIN 7 // Configurable, see typical pin layout above
Used those pins and ReadandWrite and DumpInfo from the examples works fine with my cheap old MRC552 board.
RC522 / MKR1010
SDA / 7
RST / 6
MISO / MISO
SCK / SCK
MOSI / MOSI
3.3V / VCC
GND / GND
Hope this helps.