I hope March and April have been kind to you in order completions.
Unfortunately, these past two months I had a buyers order mistakenly a few gigs and then I had to cancel them, but they still affect the rating and analytics. Note that the buyers didn’t even fill in the requirements or anything so I still had that Nudge button available.
My suggestion is for Fiverr to not take into account order cancellations which requirements haven’t been filled. If a buyer orders and fills the requirements then cancels, that’s okay as it may be a miscommunication or something else. But, when the buyer doesn’t give you the info or orders by mistake, I think those should not count.