GitHub issues updates (#24292)

PR to address 4 GitHub issues assigned to my docs areas.

Author: akristen

content/manuals/billing/payment-method.md

@@ -237,11 +237,10 @@ verification email and enter the amount of this deposit to verify your account.
 
 ## Failed payments
 
-You can't manually retry a failed payment. Docker will retry failed payments
-based on the retry schedule.
+If your payment fails, select **Pay now**. This redirects you from Docker Hub so you can manually retry the payment through Stripe.
 
-If your subscription payment fails, there is a grace period of 15 days,
-including the due date. Docker retries to collect the payment 3 times using the
+You have a grace period of 15 days
+including the due date when your payment fails. Docker retries to collect the payment 3 times using the
 following schedule:
 
 - 3 days after the due date

content/manuals/enterprise/security/single-sign-on/FAQs/idp-faqs.md

@@ -27,7 +27,12 @@ To turn on SSO in Docker, you need the following from your IdP:
 
 ## What happens if my existing certificate expires?
 
-If your certificate expires, contact your identity provider to retrieve a new X.509 certificate. Then update the certificate in the [SSO configuration settings](/manuals/enterprise/security/single-sign-on/manage.md#manage-sso-connections) in the Docker Admin Console.
+Contact your identity provider to retrieve a new X.509 certificate. Update with the new certificate in [SSO configuration settings](/manuals/enterprise/security/single-sign-on/manage.md#manage-sso-connections) from Docker Admin Console.
+
+- If your organization enforces SSO, username and password credentials won't work.
+- If your organization doesn't enforce SSO, users can sign in with their username and password credentials.
+
+If you need additional help, contact [Docker support](https://app.docker.com/support/contact).
 
 ## What happens if my IdP goes down when SSO is turned on?