Numerical usernames are converted to exponential format

Hi @Molesbain! I understand that some of your logins have numerical usernames, and these have been converted to exponential format. This definitely isn't the intended behaviour, and it sounds as if something may be going wrong somewhere.

Could you tell me a little more about how these particular logins were originally created? For example, were they imported from a CSV file, and if so, had you edited this CSV file in something like Excel first?