Shoppers are voicing their frustration following a change that caused products showing incorrect sizing.
The second-hand shopping app has updated its sizing categories for women's and children's clothes failing to inform all users about the change.
Numerous buyers and vendors are expressing on platforms stating that platform listings now display an altered size classification versus the original listing as a result of the reclassification.
The platform stated the new system was more in line with similar services.
It has advised users to check their listings and adjust the sizing manually if necessary, resulting in member annoyance.
Before the change, the measurements included one number and one letter, like S/8 or M/10.
The new system has a letter with a size spectrum for example S/UK 8-10.
For certain items, the size labels have been reassigned - for example a size L was formerly size 12 but is now a UK 16-18.
Frankie Bridger, who produces content about larger sizing, stated the update "complicates both purchasing and selling".
"Rarely do manufacturers list XL as sizes 20-22," as the platform currently indicates.
Another user, based in Glasgow, said garments she listed featuring size 14 markings were showing in the marketplace as size 20–22.
"Should someone sized 20-22 purchase these they will likely be quite upset," she said.
A different user, located in England, explained she became annoyed 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 stated.
The app has more than 100 million shoppers, with 18 million British users.
It has emerged as a preferred choice versus similar marketplaces including eBay and Depop.
This represents another occasion where an unanticipated change to the app has proved unpopular: previously, the service retracted a modification concerning shipment methods after backlash from users.
Eleanor Hayes is a data scientist and business analyst with over a decade of experience in transforming raw data into actionable insights.