Crawling buckets with more than 3 sub-folders not working

Hi,

I've set up a crawler for a bucket with multiple sub-folders. I can see that when the sub-folders exceed three, the data is crawled but the excess sub-folders aren't recorded in the location and the filename doesn't appear.

Is there a way to allow the crawler to collect this information? Or is the only solution to create multiple crawlers?

Thanks in advance for your help.

Kind regards, Clara