True Image 2015 for Mac 1.0.6030 always notifying me to upgrade but upgrade to trial version

True Image 2015 for Mac 1.0.6030 always notifying me to upgrade, and I noticed there is a version 1.0.6680, then I Installed it.
But when I opened True Image, it warned me that I'm using a trial version, and my trial is out of date! So I have to downgrade to 1.0.6030.
The painful point is how can I always finding the old register email to download the *.dmg? Several days later it will be unavailable! Then I'll always using a trail version?