HashMonster has made changes to their server and DB. If you can’t login, you’ll just need to renew your account by going to the link below and creating your account with the same email and username. Your original HashPower and BTC deposits will be in your Account within 48 hours. So for now, it’s not a scam. Only time will tell. Just keep the free HashPower until you successfully withdraw your earnings.
Renew your account before 04/30!
http://bit.ly/HashMonsterRenewal
Use same email and username! Check your Welcome Email from before to double check.