When using recurring payments I highly suggest configuring a grace period. This gives time for failed payments, etc.. to retry safely before the subscription is forced to expire. You can force a subscription be active again by editing it in CBSubs > Subscriptions by clicking the # under the Id column.
Also should I Use Stripe Strong Customer Authentication (SCA) ?
Entirely up to you.
If so, is there any other API setup I have to do, or just clicking YES will do?
Nope, just needs to be enabled if you choose to use it.