This is not a Yoyo stroller, this is an accessory that can only be used when attached to a compatible YOYO stroller to convert it to a double stroller. If you have a YOYO2 there is a sticker underneath the seat which tells you which model you have. Here is the compatibility statement from the manufacturer:

YOYO connect attaches to YOYO3, YOYO2 and YOYO+ strollers in a single click. There is an exception for AMERICA (United States and Canada) where YOYO connect is only compatible with YOYO3 and YOYO2 US10111 with serial numbers beginning K10111.