Cannot update old version 10.0.0-7

Hi everyone,

I am facing a problem with updating the Symantec Messaging Gateway version 10.0.0-7.

The first available update version is 10.0.3-3. Gateway requires to "View description" before downloading the update. When the "View description" button is pressed a popup screen appears and it is blanc (please see attachment). After pressing "OK" and "Download Only" I just get an error: "Please read the corresponding description before continuing with the software update."

So the things just go round and round - no possibility to update.

Tried different browsers: IE11, Chrome, Firefox - no result.

Maybe somebody faced this problem...

Thank you in advance for your help!