It's appearing in all of your gigs. Try opening your profile in incognito mode to cross-check.
If the buyer unchecks the "Show the delivered work on my review" option, then it won't show in the profile portfolio and reviews.
Yes, we can ask politely about improving services, I agree, but informing the buyer that "the review below 5 was actually hurtful to our gig performance" will come under indirect manipulation.
Fiverr's Shutterstock library is limited to fewer images and videos. You can politely ask the buyer to share the image by purchasing it.
Did you discuss this before starting the order that the buyer will need to purchase any premium image if required?
Yeah, that's the biggest challenge. We cannot check comments on mobile without struggling with the chrome browser on the phone and viewing desktop mode with glitches.
I have already tried hard on this but unfortunately Fiverr doesn't issue any commission invoice to the seller which is required by most countries nowadays.