Access ftp with the new changeover to upload site backup from website builder

Hi everyone can we still get into ftp with the new changes being made is yes how can we do this please help thanks I am using a imac any help would be appreciated.:pray:

UPDATE

OK i have accessed the FTP but when i put my backup in to the public htlm folder my site still does not work

Update 2

ok i put all my files from the backup i made in to the Public_html folder thinking my site will come back up now when i go to the site i get the following error

Please Install Zend Optimizer!

can anyone help i am desperate to get my site back as it was

What kind of website are you trying to re-upload?

Hi james its just simple 5 page site I am music producer its just an informative site I have a backup of it from website builder i put all the files via ftp into public HTML folder but it does not seem to load any help would be appreciated thanks

my backup is a tar file and its about 50mb

inside the tar file looks like this

Ah right so your files are there just extract them and upload them to your public_html folder and your site will function again no?