I figured out that my problem of number 2 was just a DNS issue pointing to a different server of mine. So I can now use the renamed server to get in, but I still can't figure out any way to properly migrate my sites over to the new server. Still looking for that.
Thanks to anyone who has any ideas!
I am trying to migrate my 4 Worpress websites from a Plesk instance running on Amazon Lightsail to another instance running on Lightsail but with a new OS and installation of Plesk. I'm trying to migrate one of the sites that very small first as a test. That site gets little traffic. Once it's...