I've repotted, changed position and tried it outdoors in shade and filtered light with no results
These plants prefer to be root bound and will grow very slowly after being transplanted.
No direct sunlight for your plant; they prefer shady location.
Give your plant more time and let it stay in its current pot.
https://www.gardeningknowhow.com/houseplants/zz-plant/caring-for-zz-plant.htm
I have a raven zz plant and want to check on what medium to plant it in.
Use a good quality potting soil that is fast draining or use a cacti/succulent mix.
Do not repot unless extremely crowded; they prefer a tight container. Only go up one size if needed.
They will slow down growth after transplanting.
https://www.gardeningknowhow.com/houseplants/zz-plant/caring-for-zz-plant.htm
Remember all parts are toxic and you should wash hands after handling.
I’ve had the plant for about 2 years. I’ve always watered and cared for the plant the same, and it has always seemed happy. When the stems began to falls, I checked the roots for any issues. They looked fine. So I added some fresh soil, and have just bee watching it. Hoping it’d straighten up. Such a beautiful plant. I’d hate to see anything happen to it.
It seems very healthy, to me. This will be expected as the plant ages. If you choose, you can support them with stakes, or trellising.
Here is an article for more information on the care of the plant:
https://www.gardeningknowhow.com/houseplants/zz-plant/caring-for-zz-plant.htm
Thanks so much.
I have had the plant for many years, and I have not seen these before.
Wow! Your ZZ plant flowered! I had to look this up, as I hadn't heard of it, but that little corn cob is your plant's way of blooming.
http://blogs.ifas.ufl.edu/nassauco/2017/06/11/fact-sheet-zz-plant/
https://www.gardeningknowhow.com/houseplants/zz-plant/caring-for-zz-plant.htm
This particular stem has a kind of sap that was a precursor to this bud. I now have have another branch that is producing the same.
Congratulations! Your ZZ plant is blooming. it's not common in indoor plants to savor the moment. However, the sap may be a sign of an insect invasion.
https://www.gardeningknowhow.com/houseplants/hpgen/sticky-plant-leaves.htm
I'm sure that I have not overwatered it.
Unfortunately, your photos did not come through. I am unable to see the damage to assess the issues at hand. Many times, direct light will be the cause of leaf spotting, though.
In the meantime, this article will help you with the care of the plant:
https://www.gardeningknowhow.com/houseplants/zz-plant/caring-for-zz-plant.htm