Automated PO Excel Downloader Script

I need a Python Selenium script to scrape a secure website and download purchase order Excel files. The site is stable and requires an authentication code to log in.

Requirements:
- Log in with authentication code
- Select business name from 3 options
- Choose account name from single option
- Navigate to operations page
- Download PO Acknowledging Excel files via download button available under 3 dots

Script should be:
- Scheduled via cron job
- Send an alert and stop on errors

Ideal Skills:
- Proficiency in Python and Selenium
- Experience with web scraping and handling logins
- Familiarity with cron jobs and error logging