I just came across the scenario when I needed to remove the payment method or in other words canceling the hosting subscription. What I wanted to achieve was making sure that next recurring payment will not happen, but at the same time I wanted to use up the hosting period I payed for.
I was not able to do that. I was only able to cancel the hosting subscription which terminated the service immediately. This way I threw away about 100$ without refund and without possibility to use the hosting till the end of the period I payed for.
This felt unfair.
Other services like Adobe plans let you use up your credit even if you cancel the ongoing deal.
Maybe something to consider implementing.
update: I got refund, but it is the same thing, credit card has to be there til the end of payed period.
Here is wishlist thread https://wishlist.webflow.com/ideas/WEBFLOW-I-1529