Pro Sites 3.5.0.1 Charged User and Disabled site

Since upgrading to Pro Sites v.3.5.0.1, two clients have been billed their subscription fee (via Stripe), with a successful payment (check via Stripe.com); Pro Sites did not register/log the successful payment webhook and promptly disabled their site(s).

These two sites were the first two payments for this months rotation and I fear this will be the case with all the other sites.

Please advise.