I’ve had this issue for about a year since I began with Fiverr.
Other than the regular “REVISION REQUESTED” and “Revise your delivery to avoid cancellation.” I get for orders, I receive “Please revise the delivery according to my comments below. Thanks,” together with a notification with “You have 1 new comments in in your order files”. Now, there are no comments for me to view anywhere, and nowhere can I see these comments on the file that I delivered. I believe viewing the comments have worked for some orders in the past but not for the others. I have tried viewing the comments on many computers and devices but this does not solve the issue that I have. I have received this bug or issue a couple of times now and I would wish to not have an issue like this since it affects the delivery time for revisions and possibly the ratings left by some buyers.