I heard Ubisoft was kicked off steam is it true?

They were never kicked off. They removed their games to promote their own platform, but it was short lived.

So in order to get the free game I have to pay for a monthly subscription of $18 a month and only if it's a new account?

yes but you will get 6 months free

double click image to zoom in

Intel Holiday Bundle 2024 - (Free UBISOFT+ Classics 6 Month Subscription & Free Assassin’s Creed Shadows) - Limit 1 MASTER KEY PER VALID PURCHASE

Promotional Period: October 24, 2024 - March 31, 2025
Redemption Period: October 24, 2024 - May 15, 2025
Redemption URL: https://softwareoffer.intel.com
<Assassin’s Creed Shadows> game Launches: March 20, 2025 (Restricted to new Ubisoft+ subscriptions)
Limit 1 MASTER KEY PER VALID PURCHASE

Out of Stock