There's a sensor that detects the toner at a certain level in the waste box (most of the time right before the neck of the waste box). Locate that sensor and make sure the sensor and the waste box are clear/clean at that point.
your waste box is one that goes in flat by the look of the specs I see. If that's correct, the top part should curve up towards the handle. I'd take the waste box out, look for a clear part on the waste box. Compare that to where the box sits in the printer to find the sensor. Clean the sensor off with a tissue and insert the waste box again. If you can attach some pictures of around the new waste box I might be able to help show you where to look.
Never suggested the waste box wasn't new. I'm fine with letting someone else take care of this ticket. Enjoy your day
Hello. My name is***** can provide you some additional assistance with your question.
I will attach a picture of the waste toner box so you can easily identify
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