- Authorization - /api/contact-login/json/ , pass parameters login, password, userlogin (client login), userpassword (client password) and temporary=1 parameter to it
- In response to authorization, you will receive a restapihash, pass it to the method for receiving orders described here
https://crm-onebox.com/en/api/orders/ - it will filter orders by client
- Information is also given during authorization, or separately through the receiving method here
https://crm-onebox.com/ru/api/users/ , you will already have a client id
- To edit the profile, you need to call the /api/contact-update/json/ method, it is described here
https://crm-onebox.com/en/api/users/I advise you to send all requests via POST