I'm keeping my fingers crossed that the problems with the site are now gone.
There were quite a few hiccups when the site was migrated to new servers.
It took awhile for the host to resolve those issues (and I was tied up with a lot of other things which were higher priorities).
Please note, however, that if you have any shortcuts/bookmarks to specific pages (other than the Home page), you will need to
update those ("dnn7" is now part of the URL).