Has anyone been able to add a 123 reg webmail account to the new Macbook Pro?

The new MacBook has a very simple system to add mail accounts, which doesn't allow you to input any port details or change SSL settings.. When I try to add my 123 reg webmail I get error message 'unable to verify password' and also 'you password cannot be sent securely'.

Any ideas anyone? I cant find anything online, so I'm wondering if its just me that is having this issue?

Thanks