Hello Roberta,
It is expected, as you have started Align Photos operation for almost 7000 images in Highest accuracy mode with no pre-selection applied. So each image is being matched with every other.
According to the current project state the image matching will take about 8 hours more. And after that the camera alignment operation will be started (I think it will take quite a while as well).
You should be able to download the project when the processing is finally over, so I suggest to wait till it is finished, as main part is almost completed. But for the next similar projects it is suggested to use Generic preselection.