Dreaded "One or more accounts are having connection issues" V1.80 MailSpring Free

Problem

Gold Rounded Box in lower left corner with text: “One or more accounts are having connection issues” and Text Button: “Try Now” appears frequently or after manual F5 sync. Clicking “Try Now” has message Box disappear for a few seconds then reappear. Using ISP “RCN” Imap and Smtp, see port info
under “Email Provider” below.

Context

N/A

Email Provider

RCN | Standard: imapDOTrcnDOTcom (Port 143) Or SSL: imapDOTrcnDOTcom - (Port 993) [Tried Both, same message]
smtpDOTrcnDOTcom alternate port- (Port 587) TLS with smtp on port 587 is currently enabled

Setup