"We can't connect to Salesforce with the account details that you provided.
Check that you've entered the correct connection details for your Salesforce account. Check if more detail is available for this error in the errorDetail field of the log."Secondly, how I can delete all these connections that are getting created (In drop down it has now 8 connections which I have been trying)
Hi MuhammadStrange. I've just successfully connected eu-gb and us-south App Connect services to several different Salesforce developer accounts, without any problem. I suspect that there is some issue within your Salesforce account, but do not what that might be.Could you get a different Salesforce developer account to try? That should clarify if there is an issue with your current Salesforce account.You can delete ("Remove") connection accounts from the App Connect gallery. In the drop down list, select the account that you want to remove, and then from the options menu (⋮), select "Remove Account".