Nevermind. Bought it, tested it, so YES, you CAN have it on two computers if you subscribe once.
So you're saying it be on a mac and a PC with the one subscription? Funny the support guy told me no... but let me tell you... he had no clue what I was talking about. almost 10 minutes talking to him just for a yes or no answer sheesh!
For a subscription: any two computers, Mac or Windows.
For a purchase (one time): you buy for Mac only or Windows only, and can install on up to two of them.
So if i buy the subscription for Pro DC, I understand I can use it on two computers, but only one at a time. If i have one computer with PDFs open in Pro DC...can the other one use the free Adobe Acrobat to just view PDFs? or will it not be able to open PDFs at all until the other computer gets out of Pro DC?
From Help topic: Activation limit reached or Sign-in failed error