Vinted users have been reacting angrily after an update resulted in products showing incorrect sizing.
The second-hand shopping app has updated its measurement guidelines for women's and children's clothes without notifying every member regarding the update.
Countless users and merchants are posting online claiming that product pages now present a different size category versus the original listing because of the remapping.
The company said the updated approach better aligns with similar services.
It has advised users to examine their items and adjust the sizing manually if necessary, which has left users frustrated.
Before the change, the sizes had both one number and one letter, such as S/8 or M/10.
The revised method features a letter with a size spectrum such as S/UK 8-10.
For certain items, the sizing has been recategorised - for example a size L used to be a 12 but is now a UK 16-18.
One content creator, who creates plus-size fashion videos, explained the modification "makes transactions more difficult".
"Rarely do manufacturers list XL as sizes 20-22," as the platform currently indicates.
Another user, located in Scotland, explained products she uploaded on Vinted with size 14 labels were displaying on the service as larger sizing 20-22.
"Should someone sized 20-22 purchase these they will likely be quite upset," she explained.
Another shopper, from Derby, said she had been left angered because the modification necessitated personal updates the sizes on "every single listing".
"For me this is particularly frustrating, as I'm chronically ill and platform income has been essential after experiencing income reduction," she explained.
The service features exceeding 100 million shoppers, including 18 million in the UK.
It has emerged as a preferred choice versus similar marketplaces including eBay and Depop.
This isn't the first time when a surprising modification within the service has received backlash: previously, the platform withdrew an update concerning shipment methods due to shopper criticism.
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Cynthia Harding
Cynthia Harding
Cynthia Harding
Cynthia Harding
Cynthia Harding