Hi Scott,
Right after your response I did receive your email about the support team freeing up my inactive activations. But I still could not install on my second machine. I did not file a follow-up case right after that, hoping to figure out if the problem was from my side. Maybe I have installed it somewhere else, but now I'm pretty sure that I only installed it on my Desktop, nowhere else. I forgot to follow up this case until I really need X1 on my notebook at the moment.
Maybe it's worth mentioning that my support has expired. And I also want to ask if I am eligible to purchase only a support. My previous purchase of X1 Search on January 2014.
Look forward to receiving your feedback.
Thank you,
Daniel