On November 12, between 8:00 and 19:00 UTC we have experienced flow failing with error "Cannot process orchestration configuration: Unrecognized option 'isFake'" . It was due to an recent update on the UI, we have reverted to the previous working version and it working as expected. The error affected only flows created or edited within the above timeframe. We have fixed the root cause and fixed most of the affected flow configurations.
However, if you still experience the problem (since the unrecognized option was stored in the configuration of the flow) the option may have to removed manually. To do so, please go to "debug mode" mode of the Flow configuration (on the flow detail page click on three dots -> debug mode) and remove any "isFake": true/false property from the flow configuration. If you are unsure about the process, please contact our support.