Alex and Marion got your covered.. I have mine set up on my desktop email client and never had a problem..

Have had the same problem from time to time I found that if a manually put the pass word in no worries .I then change the password seems to work well.

I've had that error and Site Support fixed in very quickly. Submit a Support Ticket to SiteRubix Hosting Technical Support

You might want to ask SiteSupport; https://my.wealthyaffiliate.com/websites/support

Not real sure, but I was having this problem. The only way I can get on mine is if I use my wifi that I signed up for WA on. If that makes sence. If your using a wired internet on your computer, then I can't help.