No longer free shipping

I'm wondering why I can't get free shipping for my order to Canada anymore. This page still mentions free shipping:
https://www.discobrakes.com/?s=0&t=10&q=link2us&

Did the policy change? Is there a threshold to meet to get free shipping?

Hi, Thank you for your message.

The item you have selected may no longer be in stock at the warehouse we process shipping to Canada. To help you further, please email our Customer Service team at [email protected]

Please include the part number of the item in your email and your shipping address.

We look forward to serving you again soon.