cPanel "Login Invalid", WHM "Login successful"

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http://forums.cpanel.net – Hello, We have a reseller on our server, which for a long time now have only used the reseller-part of his account. Now he wanted his own site moved to his reseller account, and I naturally just used his existing account, the reseller account, to put the website on. The website is working and accessible, however, he can not log into cPanel. He gave me his password, and I tried the following: - Logging into WHM, List Accounts and use the cPanel login button on his own account - Login Invaild. - Logging into cPanel directly with same username/password combination - Login Invalid - L (HowTos)