You should not have any problems using Telerik OpenAccess with the Business Application template. I am afraid that currently we don't have any documentation on creating a project with this template however it should not differ from the normal workflow at all. Having said that you should not have any problems using the help topics available in our documentation here.
As for your other problem - we tried to login with Chromium and everything worked out as expected. Can you please give it another try?
the Telerik team
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