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We do not sell plants. We only offer gardening information. Unfortunately, it is another company.

It is hard to say from this photo. It would be my guess that the watering habits weren't quite what they should be. It will be necessary to make sure that they dry out down at least 1/3 of the way into the container between waterings. Watering too much will cause disease, while underwatering will cause die off, as well.

Another thing to consider will be the amount of light that they receive. They cannot handle full sun, so they will need to be in a very shaded area.

In the meantime, these articles will help:

https://www.gardeningknowhow.com/ornamental/flowers/impatiens/growing-impatiens-flowers.htm

https://www.gardeningknowhow.com/ornamental/flowers/impatiens

If you take it to the sink and let the water run in it, the water should come out the drainage holes. If the soil is compacted, the water would come out the top. I'm wondering if you are not adding enough water? How long has the soil been in the container? If it has been more than a year, the soil may have degraded. You may want to replace the soil with a good draining mix that contains perlite. If it's fresh soil from this season, try working a little perlite into the soil, without disturbing the roots. Even if you just add some to the top of the soil, it will work down when watered.