Why does an endless captcha occur during direct authorization in VK when using a proxy?

Question

PHP

Why does an endless captcha occur during direct authorization in VK when using a proxy?
Login and password are correct, proxies are paid and working. But it still keeps popping up the endless captcha. Who faced this?

Answer 1

these are all mutually exclusive paragraphs
in short: VK is waiting for a set of "captcha, cookies, IP", a set for each IP
you give your own captcha from IP, and cookies - from another IP, that's all