Lay-out messed up after changing http into https

I transformed my web site from http to https, now the lay-out is screwed up.

In this old subject there appears to be a remedy:

Nonetheless, while setting up the Truly Straightforward SSL plugin I am requested the Hostname as well as the ftp customer login and after that I obtain a mistake. The ftp I think is the username as well as password I make use of to visit to my host’s control board, yet what host name do I get in? I attempted the link of my web site (it claims username wrong), after that additionally with an enhancement (:2083) that I see for the control board (it claims link stopped working), so neither functions.

The web page I require aid with: [log in to see the link]