Not every GLACIER accessory fits every GLACIER model
Here's a small product detail that could easily be missed when shopping for EcoFlow accessories: The GLACIER Detachable Wheels and Lever kit includes two removable wheels and one lever.
The idea is quite practical: move the refrigerator-freezer around when necessary, then remove the accessories when the unit needs to fit into a tighter space, such as an RV countertop or passenger seat. However, there is an important compatibility distinction. EcoFlow specifies that this particular accessory is designed for the original GLACIER and is not compatible with the GLACIER Classic 35L, 45L or 55L models.
I think this is worth pointing out because products can share a family name without sharing the same accessory mounting arrangements. Before ordering replacement parts or mobility accessories, checking the exact model is always a good idea.