sphost

I'm trying to get WHMCS setup and I've run into a bit of a problem. When I try to register a domain via WHMCS, it returns an error saying is couldn't connect to enom, my login or password is invalid. I've checked and double checked my enom credentials. I'm able to login to enom at their website no problems. Is there a trick to it? Does the enom account need funds available? I've never actually used enom to register domains, so it's a new account. I've got WHMCS in "test mode" for enom. Any help would be appreciated.