Following a suggestion from one of the users of GTrends SE, I’ve added proxy support to the tool. Now you can specify a HTTP proxy in the “Settings” window.
I’ve also (finally!) got the upgrade script up and working. If you have already purchased the software, you can now visit the Updates page at any time, enter your email adress and get the download link for the latest version of GTrends emailed to you. Note that this function is still experimental, so let me know if you have any problems with it.