Thanks for coming back with that information.
If the website is blank (the White Screen of Death) even with the Kale theme disabled and running on a default WordPress theme, it means that either your plugins are not completely disabled and one is causing the white screen, or there’s some server issue. This certainly excludes Kale theme as the reason behind this issue.
Could you again rename /kale/
folder but this time also rename /wp-content/plugins/
to /plugins-BROKEN/
and see what happens?
If the website comes back to life, great, if not, could you contact your hosting support and ask them to check whether PHP and MySQL versions in use on the server are at least at 5.6.x level? You could also log in to your cPanel (or equivalent) and check your database integrity, or ask your hosting support to check it out as well.
As before, please let me know what happens.
Kind regards.