Just got an e-mail from Ubisoft.

Free trial of their new subscription service.

"***Restrictions apply. One free trial per Ubisoft Account from September 3rd to 30th, 2019. To begin free trial, you must provide a valid credit or debit card. You will be charged the full amount of the subscription price ($14.99 per month + taxes) on expiration of the free trial on October 1, 2019, unless you cancel before September 30th – 11:59pm, by visiting uplayplus.com. Additional terms and conditions apply including age and territorial restrictions; for more information please visit the FAQ section on uplayplus.com. This is a promotional offer and is subject to change. Void where prohibited.
"

Ah, there's the rub. They want CC info, and will automatically start charging if you forget to cancel before the free trial is over. Clearly a YMMV type of deal. :)

I told them to ''git'' when it was free and haven't looked back.

If I am not mistaken though you can cancel immediately and still have the free month - so no risk of forgetting to cancel it. It was this way when I tested Origin back then and Ubisoft claims that you can cancel the subscription whenever you want.

If you really want to enter your CC information on another site you don't even plan to use of course is another thing.