Find and fix a bug in the AlfaStrakhovanie API integration

Good afternoon! There is a project to find the best insurance offers. We work with the API of some insurance companies, including AlfaStrakh. The project is written in Yii2 and before the calculation and purchase of insurance worked for Alpha, but then something happened and everything broke. I am looking for a person who can quickly correct this. The deadline today is 18:00 - 20:00 Moscow time. Offer the price yourself :)