2.Register the PostgreSQL DbProvider without installing the driver. This involves downloading the assemblies, placing them in the Bin folder under the Stand-Alone Report Designer default installation folder, C:\Program Files (x86)\Progress\Telerik Reporting R3 2019\Report Designer\Bin, and adding the DbProviderFacotry to the Telerik.ReportDesigner.exe.config.
Can you confirm which option is in use? Additionally, can you provide any error messages that you are receiving? Once I have more information about the scenario I can investigate in more detail.
In the meantime, please let me know if you need any additional information. Thank you and I look forward to your reply.
Regards,
Eric R | Technical Support Engineer
Progress Telerik
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