InfoPath Dev

I have created an InfoPath form template and I use a test certificate for testing purposes. The form template is about to be used in the production environment and I want to create a trusted certificate for the form so users won’t get the warning that the form isn’t signed with a trusted certificate…. I have installed an internal certificate ...

When I connect to our SharePoint site from a remote location and open an InfoPath form from within a SharePoint library I get an error that the connection to the data sources (only those in SQL Server) can't be established because they aren't available. When I cancel eventually the form opens but all the form elements that get their data ...