Vinted users have been reacting angrily following a change that caused items being listed as the wrong size.
The popular resale platform has altered its size classifications for women's and children's clothes without notifying all users about the change.
Many shoppers and sellers have taken to social media claiming that product pages now present a modified sizing category compared to what was initially listed as a result of the reclassification.
The platform stated the revised method more closely matches similar services.
The platform has recommended to examine their items and manually change the size when needed, causing user dissatisfaction.
Earlier, the measurements included one number and one letter, for instance S/8 or M/10.
The new system has a letter with a size spectrum such as S/UK 8-10.
In some cases, the size labels have been reassigned - for example a size L used to be a 12 but now shows as UK 16-18.
One content creator, who produces content about larger sizing, said the change "makes both selling and buying harder".
"Not many brands say XL is a 20-22," which is what Vinted now does.
Another user, from Glasgow, stated items she posted featuring size 14 markings were displaying on the service as larger sizing 20-22.
"If anyone [who is] size 20-22 buys them they may become frustrated," she explained.
Another shopper, based in Derby, said she had been left angered because the modification necessitated personal updates the measurements for "each individual item".
"Personally, this is quite irritating, as I'm chronically ill and selling on Vinted has been paramount following partial earnings loss," she explained.
The app has more than 100 million shoppers, comprising 18 million UK members.
It has become a favored option compared to resale services such as eBay and Depop.
This isn't the first time when a surprising modification to the app has proved unpopular: previously, the platform withdrew an update concerning shipment methods following member complaints.
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