your post does not provide much information to react upon. Can you please provide more details on your current experience and what '... I am unable to download and access...' actually means?
Which version of UCS and OpenVPN4UCS is in use? Are multiple servers involved (f.e. a dedicated member server for OpenVPN)?
Which steps do you take to gain access and which (unmatched) results do you expect by doing so?
Has the server been configured properly before you tried to provide user access?
Please crosscheck the provided instructions as well. They can be found here:
Did you know these?
Ingo von Thielau