Beginning at about 02:30 UTC on October 23 (10:30 PM ET on October 22), some forms with a Salesforce connection began failing with “Error connecting to Salesforce.” This was related to an issue on the Salesforce side, which Salesforce has since resolved: https://status.salesforce.com/incidents/20004512
Authorizations that were affected will not recover on their own and need to be reauthorized. Until then, affected forms may not send data to Salesforce or pull data from it, forms that use the Salesforce Prefill connector may not be prefilled, and dynamic picklists may fail to populate. Your Salesforce authorization may still show as Valid in your account even though it is affected.
To restore your connection: • Open an affected form’s Salesforce connector and note which authorization it uses. • Hover over your username in the top right and select External Authorizations. • Select Reauthorize on that authorization. Reauthorize once per Salesforce user, from this page, rather than from each individual connector.