SAP Web IDE and ABAP Gateway connectivity fails to get the applications

Hello Experts,

I am trying to enhance the OpenText Fiori invoice application using Web IDE trail version connected to Gateway server, the connectivity is successful however getting the following error when creating extension project

"Failed to get the applications, Cannot deploy the application. An entry for the UI5 BSP Repository was not found in the ABAP Development Tools Discovery service. Install the missing software components on your ABAP system and try again".

I have activated the service /sap/bc/adt and disable the SAML2 config as per the solutions given in previous posts, still it is not working.

Appreciate your help.