They could have left the rating by mistake OR they could have been one of those people who need to be completely blown away to leave someone a 5*.
I got 4* recently with something like: “Good job” and the amount of work that order took was way above my comfort level. Yet, I delivered everything quickly, with no objections. Nor was I made aware that the buyer didn’t like something, everything was “great” the entire time.
I won’t be working with them again if I can help it. The buyer has a right to leave any rating they want, of course, and I’d be completely fine with the rating if I was made aware that there was a problem of any kind as I was working. But you don’t bombard me with “great!” and “fantastic!” the entire time, only to turn around and tell me I’m “good”.
It’s a funny new thing I’ve noticed recently. Some buyers are kind of… embarrassed or nervous to request revisions? They’ll apologize a lot, shower you in compliments to an excessive degree because they seem to think that otherwise you’ll refuse to revise the work. Then, as soon as the project is done and they’ve got everything they wanted from you, there is this switch in attitude and you’re no longer wonderful, you’re just “meh”. I wish buyers would stop doing that, it’s just creepy.