Vinted users have been reacting angrily after an update resulted in products showing incorrect sizing.
This online marketplace has revised its size classifications for female and kids' apparel but did not contact all users about the change.
Numerous buyers and vendors are posting online saying Vinted listings now show a different size category versus the original listing because of the remapping.
The platform stated the updated approach better aligns with similar services.
It has advised users to examine their items and adjust the sizing manually where appropriate, resulting in member annoyance.
Before the change, the sizes had both numerical and alphabetical indicators, like S/8 or M/10.
The new system has an alphabetical indicator and numerical range such as S/UK 8-10.
With some products, the sizing has been recategorised - like an L measurement used to be a 12 but is now a UK 16-18.
A fashion influencer, who produces content about larger sizing, stated the update "complicates both purchasing and selling".
"Rarely do manufacturers list XL as sizes 20-22," which is what Vinted now does.
A different member, from Glasgow, explained products she uploaded with size 14 tags were appearing on the platform as size 20–22.
"If buyers measuring 20-22 acquire them they may become frustrated," she stated.
Charlotte Lunn, located in England, stated she felt frustrated due to the update requiring manual adjustment the sizing for "all her products".
"Personally, this is quite irritating, because of my ongoing medical condition and Vinted sales have been crucial after experiencing income reduction," she explained.
The platform boasts over 100 million users, comprising 18 million UK members.
It has emerged as a preferred choice versus similar marketplaces including eBay and Depop.
This isn't the first time when a surprising modification to the app has proved unpopular: earlier, the service retracted a modification concerning shipment methods following member complaints.
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