We got into Scholler yesterday 7/18 and also couldn't connect to my email server with my laptop (Windows 10). No message other than "failed to connect". I get my email from a third party company, don't know anything about dynamic dns. But I can retrieve my email using my cell phone with a cell connection. (I'm with AT&T and service is good for now, by the way). What I did was to use my cellphone as a wifi hotspot, connect the laptop to the cellphone, and all works normally. If you are worried about using too much cell data, you could configure your email program to not automatically download attachments.