cartango,
Thanks for registering here and thanks for your constant feedback
If you click on the "Show All File" button, you will see an option to filter. You can filter by first few letters of the file name / folder name. This may help if recently uploaded folder / files have higher "folder number", i.e. if 5000 means it was uploaded after 4500, then this might work.
Also, you can Deselect the "Show ACL" and then increase the page size to 10,000 instead of 1,000. That way, you can see 10,000 files at a time.
S3 API does not provide us a way to fetch by modified date, so these are some workarounds.
Thanks
Saurabh