Portfolio projects order

Hello! I have a little trouble with the portfolio page, I try to order the project but even if I drag them I cannot decide the right order.

I explain better: I use the portfolio and projects to show some of my travel photos and I'd like to put them by years, I try to drag the oldest at the end of the list but it doesn't work.

Any help?

Thanks so much

If you cannot reorder the portfolio items in the page dashboard (with the project list on the left of the screen) then I would contact Squarespace Support as it sounds like an error occurring on your website.