I had some TVE authentication issues on several DISH channels this morning so I set the password again as though it was wrong - it wasn't.
After rescanning all channels, many were missing. Even a couple that I was watching earlier in the day.
The errors in the scan window were either:
no login form found
or
notAuthorized: A network error occured when communicating with the provider's authorization service
I was able to reauthorize most of the failed channels by doing them one at a time. Many of them required 3 attempts and some up to 10 before they got the checkmark.
Once that was all done, I selected a channel to watch and immediately got a 503 error. After selecting the channel several times, the channel came on.
I'm not having any other network issues.