i have downloaded the LicenseFile.xml file.Where should I put this in?
I don't know what that file does, our software doesn't use it, you must have done something wrong, since it's not required. In any case, as explained so many times on the forum ( and as explained on the manual too), you should not use the forum to post questions related to activation on the forum because, of course, we cannot support you well here, since you would have to supply details about your order you are not supposed to share in public.
That's why for questions related to the activation, you should always use the support email.