Hi Katherine. I had a few clients that were impacted by this issue. It appears that while Zoom had warned this was going to be deprecated, the exact date may not have reached all users and so many started having issues this past May 30. As a stop gap, I have outlined a workaround at our blog post below. Please treat this as a stop gap and make plans to use the launch point or custom API connection as soon as possible.
HOW-TO: Webhook Marketo to Zoom Using v2 API
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