How to login to a site with Captcha from a client application?

Question

PHP

There is a client application for the site w3bsit3-dns.com, the other day a captcha was added to the login form and because of this, the login function in the application broke.
Previously, a post request containing a username, password, etc. was simply sent. I tried to do the same - separately pulled out some values ​​(value) input in the form, a picture with a captcha to know what numbers to enter, and separately sent a post request with this data, but still an error occurs, they say, I entered the wrong numbers.
In general, I'm asking you to help me figure this out. Maybe I missed something? Maybe you need to do something with cookies or something else? Here is the login form, help me figure it out.

Answer 1

In addition to captcha, additional ones are also sent. fields that are generated when the request is sent. Also look at this.
Most likely the server also wants some cookies. Work with them too.