Not portable & wobbly

I purchased this to hold back animals and have yet to use it because it is so wobbly. First, it was very difficult to get the parts to clip together, so I thought it was going to be sturdy. However, once together, it just flops about. Additionally, no matter what I do, there doesn’t seem to be a decent setting for it to fit flush against the wall. I am still curious how it is portable with how much of a pain it was to pull apart to adjust.

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