I get this same message and I cannot enter meetings in which the links have been sent to me. I can give out zoom links and I'm fine, but if I press on link that someone else sends to me, the message is that I'm being "rate limited" and Cloudfare asks me over and over to identify that I am a human. I am ZoomPro user in other words I pay for this account. Also I cannot get phone or chatbot support from zoom because I do not qualify - as a paid user!