I have an extra bag so I paid for Wizz Priority service but it is said: plus Trolley bag. But what if I have no wheels - just a handbag that fits into their dimension requirements?
You should be good with your handbag. According to skyscanner, your bag does not have to wheels.
Here's the link and quote:
It can be a trolley or a backpack, as long as it fits the baggage sizer (including wheels and handles) – it’ll be allowed.