This POP3 server does not allow plaintext passwords. Please try changing to 'Encrypted password' as the 'Authentication method' in the 'Account Settings | Server settings'.
Iste servitor POP3 non permitte contrasignos in texto simple. Tenta cambiar a 'Contrasigno cryptate' le 'Methodo de authentication' in 'Parametros de contos | Parametros de servitor'.