Question about König Chain Easy-Fit Cu-9 103

Hello
I bought the chains for my Peugeot Traveller. I find the chains very practical, easy to fit, great stuff.

Have them on my V-Class with rear-wheel drive. It worked perfectly. Important, had to deactivate ESP, otherwise there was interference. According to a car mechanic (from the mountains), this is often the case. Because the assistance systems cannot cope with snow chains. The problems were that ESP and ABS no longer worked. In snow without ABS... not so funny...
But the snow chains were really great!