Sorry if I’ve misunderstood. But are you asking if you can review a SP a second time…… one that you’ve already reviewed 18 months ago. ?
That’s how I’ve read the OP. And as much as the rules are there to be followed (and obviously rightly so) a repeat review of someone you’ve seen is of value imo so long as it’s not touting and so long as it’s not essentially the same (or a very similar) booking in a short space of time.
A second (of more) review of the same escort should add value to the site and I take that to be showing a different type of meet in terms of services / length / performance / noticeable physicality change / location quality or to highlight that her service level hasn’t dropped over a period of time (my personal opinion is about a year plus as a lot can change in a year).
That’s only my opinion and how I approach this but it fits nicely within the framework of the rules. Essentially, I’d say just use your common sense but we’ve seen plenty that don’t seem to have any!