Are easily jammed shut

I've had a lot of problems with these containers getting jammed shut. A bunch of them arrived jammed. I bought them for lip balm, and they work well for that when they work, but a bunch have also gotten jammed after I filled them with product. Sometimes if you can see that the lid is uneven you can bang on them and then they open, but there are some I have not yet figured out how to reopen, and the product I made is trapped inside...

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