Dear Samantha,
from the first screenshot it looks like there is some text (“test”) in the Dataset selector/dropdown. That field is typically prefilled with the project name to make searching easier when selecting datasets during project creation.
Although I don’t know the exact name you assigned to the dataset, it’s possible that the filter is currently excluding it (for example, if the dataset name does not include “test”). As a result, the newly created dataset might not appear in the list.
Could you try clearing the filter text in the dropdown and check whether the dataset becomes visible?
It may sound trivial, but it helps rule out the most common cause first.
Best regards,