Unable to log on to LinkedIn - Msg returns "Email Bounced"

Unable to log in to LInkedIn. Msg returns that UName or PW are incorrect. Attempt to gain PW fails with error msg on LiinkedIN that the email address is invalid or bounced. Tried 2 valid email addresses, both return the same error message. No problem, receiving emails at either of those addresses at all today. Reached out to LInkedIN 12 hrs ago, no response. Disappointed that LinkedIn has not responded to my request from early this morning. It's now 9:40pm at night.