Not sure where to ask this seeing as the answer will probably change any minute, but api.clover.com and api.eu.clover.com are both apparently down (http://www.isitdownrightnow.com/api.e...)
I have been unable to get tokens via the Clover SDK in android for most of the day, and we have customers unable to install our app from the market right now. I believe the problem lies with Clover's servers, although the issues may be totally coincidental.