After updating a plugin/theme, my website crashed. What do I do?
First thing you need to do:
Connect to your site FTP and rename the folder of the plugin/theme you just updated.
It should be located inside your wp-content/plugins (wp-content/themes) folder.
If the issue is with the plugin/theme you have updated, this will deactivate that plugin/theme after which you should be able to log into your site’s wp-admin area.
If you don’t know which plugin/theme caused your site to crash, you can rename your whole plugins (themes) folder.