Good Afternoon,
I am sorry to hear you didn't receive an email with your tracking number, I will certainly pass this onto our tech team for their concern.
I am glad to hear you are happy with your mat. Turtle Mat backings are anti-slip and engineered to minimise movement as much as possible; however we cannot guarantee there will be no movement as there are so many different floor finishes and carpet finishes and piles.
If you would like to discuss further then please don't hesitate to send an email to info@turtlemat.co.uk and I will be happy to help.
Kind Regards,
Turtle Mat - Laura