ERROR: Cannot Install VST Connect Pro

I just reinstalled VST Connect Pro Trial version. However, when I put the serial number in the elicnser, after download I get the following error.

A license of the same type you are trying to download is stored in the selected eLicenser already. There may not be more than one such license present on any given eLicenser.

Please restart the download process, but choose a different eLicenser to download the license to. There may not be more than one such license present on any given eLicenser.

Please restart the download process, but choose a different eLicenser to download the license to.

I restart the download process, but nothing change. I have the latest elicenser and have done maintenance few times.

Any help would be greatly appreciated.

CS