This mod rejects the registration of usernames too similar to the existing ones. For example, if 1F616EMO_c is registered, the following usernames are banned:
1F616EM0_c("0" is a number zero)IF616EMO_c("I" is an capital letter)lF616EMO_c("l" is a small letter)1F616EMO-c(underscore replaced with a dash)
Do not forget to run the database update script (chat command /as_db_init) after the installation and every time after the _as.flattern_map table is updated (or if you are unsure, every time you update this mod).