This plant looks like a type of dracaena to me. I've had it in the same spot for the past 15 years and it's always done well and grown to about 4 ft. A few months ago the leaves started to turn yellow and fall off. I repotted it but it didn't solve the problem. There's a tiny piece of new growth at the bottom, but other than that, the leaves are still turning yellow. I'm at a loss as to what to try next. I've included a before and after picture.