Shoppers are voicing their frustration after an update resulted in items being listed as the wrong size.
The popular resale platform has altered its measurement guidelines for female and kids' apparel without notifying all shoppers about the modification.
Numerous buyers and vendors are posting online stating that platform listings now display a different size category compared to what was initially listed due to the recalibration.
Vinted explained the updated approach better aligns with comparable marketplaces.
It has advised users to check their listings and manually change the size where appropriate, resulting in member annoyance.
Previously, the sizes had both one number and one letter, like S/8 or M/10.
The revised method features an alphabetical indicator and numerical range for example S/UK 8-10.
In some cases, the size labels have been reassigned - for example a size L was previously a 12 but currently displays as UK 16-18.
One content creator, who makes TikTok content about plus-size fashion, explained the modification "makes transactions more difficult".
"Rarely do manufacturers list XL as sizes 20-22," as the platform currently indicates.
A different member, located in Scotland, said garments she listed on Vinted with size 14 labels were showing in the marketplace as measurements 20-22.
"Should someone sized 20-22 purchase these they're going to be very disappointed," she explained.
A different user, from Derby, stated she felt frustrated because the modification necessitated personal updates the measurements for "each individual item".
"Personally, this is quite irritating, as I'm chronically ill and platform income has been essential following partial earnings loss," she explained.
The service features exceeding 100 million shoppers, including 18 million in the UK.
It has emerged as a preferred choice compared to resale services such as eBay and Depop.
This is not the initial instance where an unanticipated change to the app has proved unpopular: earlier, the service retracted a modification concerning shipment methods following member complaints.
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