I think the information cropped on the right would give more backing to this, but the two figures by your arrow are the points earned thus far in your membership year, not lifetime, and the text below seems to bear that out. So I'm reading this that your membership year has recently started, it inherited Gold from last year, and that with 85 rentals you could get to Platinum. I've just started my membership year so it's gone from 0 to 1 after the first rental of that year.