clients having problems completing payment process when registering for Zoom webinars

My clients started having problems / glitches mid last week when trying to complete payment processes when registering for my Zoom webinars. Some people are able to register and pay, but most of the people are having issues. They all get the same error message "There was a problem completing your payment. Please try again later."

I have opened two Zoom Support tickets. I have escalated one ticket to the management. NO one has contacted me for soon 24hrs to give an update. This is very damaging for my small business and frankly, it is very disappointing how Zoom Support is handling the cases. I have been a subscriber to Zoom soon 5 years, do not need to use the Zoom Support very often at all but now that I do, I am not getting the support I need.

I have asked my clients to go through all the known steps from Zoom resolution center. 

Anyone have experienced anything similar this past week? Any ideas how to proceed? Have you had issues with Zoom Support not giving you updates? How have you proceeded? 

Thank you for any advice on how to proceed.