Being the traffic mainly from mobile, can't understand why this happened.
In fact I'm also trying to find out a way to be sure about this but
if I leave Adblock enabled I can't see any number in prosper202 (i see just the page header), while disabling it I can also see the stats.
May this be the case, what's the fastest and easiest way to fix this issue?
a) CNAME a different domain to this one
b) If you use SSL anywhere... either get a new domain name entirely or install a certificate for the CNAMEd domain on the server instead.
If I were you I would just get a new domain > swap in > new campaigns all fine.