I have an axkid minikid car seat and it's support leg is slightly too short for our stupid car, so I bought a leg extender.
The support legs are an elliptical cylindrical in shape. They have clicky buttons on the flatter side which you use to make the leg longer or shorter.
I would have expected the extender to have the buttons on the flatter side too but they are on the narrower side so it won't click onto the original leg.
I wish I'd just taken photos when it was light but I thought I'd find instructions on the internet - nope. And the extender didn't have instructions on the box or on the axkid website.
Any ideas? Badly drawn pictures for context.. thanks