To be honest, even though I am always happy to see spanish speaking users of Yappari, I'm also always a bit uncomfortable for the rest of people who doesn't speak spanish, that's why I always try to answer in both languages.

Having said that, I'll need a log to try and help you :P Before that, if you can try latest version 2.0.7, it may help with your issue, which in fact, I know I solved in a previous release, so yours may be a special case, as is the ghost contact thing that I haven't forgotten about but hasn't been able yet to reproduce.

Truth is, this protocol change we faced weeks ago has made lots of issues to appear, so having a bug free release is certainly going to take some time (sorry).