Lights don’t stay on

Bought a set of these lids with lights and figured the batteries that were in them would die quickly which they did. I ordered another set but hadn’t opened yet because the first set continues to not always light up even after I put new batteries in them. If you unscrew the top turn the switch off and the. On again they’ll work for a little while. I’ve emailed the company twice now and have not gotten a response. I’m thinking about just returning both sets.

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