Trust me, they don't respond regardless, trial or otherwise. I purchased licenses for a consulting client that is an Indian operated firm in the USA and they insisted on using it. We had some issues, they never responded. I emailed everyone I could find at that company, they never responded. The Indian guy emailed them in their native language, and they never responded. I called them, 4 times, and they never picked up the phone.
With that kind of pathetic support, put your money elsewhere.
(If you don't believe me I will show you my portal with the licenses)