It is not clear what exactly does not work for you. API or URL? Describe your problem in more detail, and yes, I wrote to you in your private messages, you do not answer
But there you can change your email, maybe it will work
This is not a file. And the table is in the database and you are unlikely to be able to change the password there, since it is encrypted there
Подскажите, как можно одним запросом к базе данных добавить несколько полей данных в таблицу?