Email no sending to Certain G Suite accounts using workflow rule

[Instituto_San_1]

We have complaints from users that do not receive emails delivered using a workflowrule.
Me made many test cheking audit history in AppSheet and Email Log Search in the G Suite Admin Console and could no find any received or rejected record on the email account.
I tried to find the “EmailTaskResult” property in the Audit history but I was not able.
The sample G Suite account is 5656@escuelasanpedro.com.
I pasted a copy of the workflow action audit Log detais and the change workflow rule audit log details below:

Audit Log Details

Properties: { “AppTemplateVersion”: “1.000516”, “RuleName”: “Ctas Bancarias Test Email”, “EventType”: “Change”, “InvokedBy”: “Update”, “ServerName”: “produ21ea00000F”, “ServerRegion”: “EAST-US”, “IgnoreSecurityFilters”: false, “TableName”: “CuentasBancarias”, “RuleTableName”: “CuentasBancarias”, “OperationUpdateMode”: “UPDATES_ONLY”, “EventMatch”: “Workflow event successfully matched”, “Condition”: “=ISNOTBLANK([fam])”, “MatchesCondition”: “True”, “ActionResults”: “Created 1 ActionResults”, “Action Type”: “Email”, “Action Name”: “send individual email”, “EmailTo”: “5656@escuelasanpedro.com”, “EmailCC”: “”, “EmailBCC”: “caltamirano@escuelasanpedro.com”, “EmailFromDisplay”: “sanpedro@escuelasanpedro.com”, “EmailReplyTo”: “noreply@appsheet.com”, “EmailPreHeader”: “Update to application ‘Admin AppSheet’ table ‘CuentasBancarias’ by ‘sanpedro@escuelasanpedro.com’ at 14/05/2020 16:54:24”, “EmailSubaccount”: null, “EmailSubject”: “Email de Prueba - No responder”, “EmailTitle”: “Alert: Update to application ‘Admin AppSheet’ table ‘CuentasBancarias’”, “EmailAttachment”: “”, “EmailOtherAttachments”: “”, “AppTemplateName”: “7648f13b-19a9-4f62-8b53-ddf9f93e7000”, “Operation”: “Workflow action”, “Result”: “Success” }

OK

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Audit Log Details

Properties: { “AppTemplateVersion”: “1.000516”, “RuleName”: “Ctas Bancarias Test Email”, “EventType”: “Change”, “InvokedBy”: “Update”, “ServerName”: “produ21ea00000F”, “ServerRegion”: “EAST-US”, “IgnoreSecurityFilters”: false, “TableName”: “CuentasBancarias”, “RuleTableName”: “CuentasBancarias”, “OperationUpdateMode”: “UPDATES_ONLY”, “EventMatch”: “Workflow event successfully matched”, “Condition”: “=ISNOTBLANK([fam])”, “MatchesCondition”: “True”, “AppTemplateName”: “7648f13b-19a9-4f62-8b53-ddf9f93e7000”, “Operation”: “Change workflow rule”, “Result”: “Success” }

OK

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Any help appreciated.
Claudio
ISP