can't setup account with century link

I use to have quest as my internet with free email as I was able to setup the account and retrieve email from it, but I can’t remember how I got it to work. I know have Century Link email as but I’m unable to get Century Link set up as an account. The SMTP is ok, but the IMAP gives me error message. “credentials rejected”, something about my email or password not right. I’ve entered the port as 995, SSL which is what CL says it is. CL says they can’t help me, and to ask eM Client. 

One thing to note is that IMAP should be 993 not 995.