What's your question? Ask

If they are dying due to being overwatered, then it is likely that the soil has a fungal infection. The best thing to do now would be to add wettable sulfur and dolomitic lime to help it recover. Only water when the soil is almost completely dry.

This article will give you more information on their care in the future: https://www.gardeningknowhow.com/ornamental/flowers/ice-plant/growing-hardy-ice-plant.htm

I believe that I have answered the original, and that this is a duplicate.

You can propagate by seed, cuttings or dividing your plants; it depends on your patience level!

I would wait at least 3 days after herbicide application to plant.

https://www.gardeningknowhow.com/ornamental/flowers/ice-plant/growing-hardy-ice-plant.htm

From this image, your new plant looks in pretty tough shape. I would contact the seller to report the condition on arrival.

My guess is the plant got to hot in transport.

I would ask for a replacement.

https://www.gardeningknowhow.com/ornamental/flowers/ice-plant/growing-hardy-ice-plant.htm

Yes, just let it dry out for a few days or a week before watering again. Try to determine the soil moisture content before you water again, by digging down in a couple of spots to inspect the soil to see if it's wet or not. A soil moisture meter is handy.

Can you include more information? Did you plant these from seed? Were they alive beforehand, and did not come up after winter?

If these were from seed, and the seed never came up, then there could be many reasons that they did not come up. Dead or old seed would be the first reason.

Please include more information and I will be glad to help.