I am sorry for the trouble that you have encountered.
It's good that you managed to find and use the msi installation package.
The OpenAccess product consists of two installation packages - one for the main product and one for the SDK. The missing templates are part of the main Open Access product, not the SDK. I suggest you to run 'Repair' of OpenAccess through the Control Panel. If you experience issues again you can try running 'Repair' of the main product using the msi installation package.
I hope this will help you to resolve the problem on your side.
All the best,
the Telerik team
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