in regards to your first post - this is what i had to do to resolve being stuck at loading

RewriteEngine On
    RewriteCond %{HTTP:Upgrade} =websocket [NC]
    RewriteRule /(.*)           ws://localhost:3000/$1 [P,L]
    RewriteCond %{HTTP:Upgrade} !=websocket [NC]
    RewriteRule /(.*)           http://localhost:3000/$1 [P,L]

    ProxyPassReverse / http://localhost:3000/
Edit - add this to the apache domain.conf file under the ssl information