iOS, Android or web? If it is about technical support, do share the steps you took before you encountered the issue, starting from the time you launched the app / opened the website below.
To locate the app version, open the Carousell app, go to your profile ("Me" tab) > select "Settings" > select "About Carousell".
Carousell username (if any). A valid username must not contain uppercase letters and space.
Please specify the listing title or listing URL. If there are more than one listing, insert a comma between each.