@Valerie780 I can tell you what this is probably about. I looked back over the reviews you've left for your guests, not all 75, but the most recent 15 . In your most recent review, you said " Xx was a phantom guest." Of course by this you meant that the guest was out and about or kept to themselves, and the rest of the review makes it clear that this is a positive review.
But either the guest complained about the word "phantom" or some algorithm picked it up as being some sort of name-calling.
I would talk to customer service and explain that the word "phantom" was colloquial, meaning the guest was so quiet you hardly knew he was there, and it was meant to be a compliment, certainly nothing bad or biased. Be aware that you may end up talking to some less than English- fluent CS rep in the Phillipines. I would deal with this by messaging, rather than calling, as it may take some back and forth explaining, and you want a written record of the exchange.
How ridiculous.