What gets a Stellar import rejected
01The card type has to match Stellar's exact spelling and capitalisation.
02The expiry year is two digits, not four.
03UK phone numbers need the full eleven digits starting 07.
04Profile names have to be unique; a repeat overwrites the earlier one on import.
CSV file
One row per profile, with a header row the bot checks before importing.
UK details
Phones are eleven digits starting 07 and postcodes keep their space. Both get checked before conversion.
Card data stays put
The converter works in memory and stores nothing. Your file comes straight back to your browser.