I have Integromat webhooks setup between Survey123 and Office365 Email. They function but a keep getting the message

I've contacted Integromat but they've referred me back to Esri for help. I originally thought that this was a disruption caused by Survey123 Connect but these scenarios were created from scratch after the last modification/publication from Connect.
I've upgraded to a paid subscription for the extra help, which produced the only real response from Integromat - a referral to Esri for a solution.
Any suggestions would be helpful. Thanks!