Vinted users have been reacting angrily following a change that caused items being listed as the wrong size.
This online marketplace has altered its measurement guidelines for female and kids' apparel but did not contact all users about the change.
Many shoppers and sellers are expressing on platforms saying Vinted listings now show an altered size classification versus the original listing because of the remapping.
Vinted explained the updated approach better aligns with other platforms.
They have suggested members to examine their items and adjust the sizing manually when needed, causing user dissatisfaction.
Previously, the measurements included a single numeric size and a letter, for instance S/8 or M/10.
The updated approach includes a letter and a range for example S/UK 8-10.
With some products, the measurements have been reclassified - such as a large size was previously a 12 but currently displays as UK 16-18.
A fashion influencer, who creates plus-size fashion videos, said the change "makes both selling and buying harder".
"Few clothing companies classify XL as 20-22," as the platform currently indicates.
Stephanie Gallen, located in Scotland, said garments she listed with size 14 tags were appearing on the platform as larger sizing 20-22.
"If buyers measuring 20-22 acquire them they will likely be quite upset," she stated.
A different user, located in England, said she had been left angered due to the update requiring manual adjustment the measurements for "each individual item".
"This situation is especially annoying, as I'm chronically ill and selling on Vinted has been paramount for me since losing part of my income," she explained.
The platform boasts over 100 million users, comprising 18 million UK members.
It has become a favored option to second-hand platforms like eBay and Depop.
This is not the initial instance when a surprising modification on the platform has faced criticism: earlier, the service retracted a modification concerning shipment methods following member complaints.
A tech journalist and digital anthropologist focusing on the societal impacts of emerging technologies and online communities.