I have checked. You are not posting from the correct forum name on that account.
However the mentioned error code is because you are on a VPN or proxied network.
You can delete this WordPress install via the softaculous installer section. Click on the WordPress icon and scroll down to your installs. You should see an icon to delete this next to the installed WordPress site
You should try renaming the plugin folder for the plugin you recently updated. You can find this in wp-content/plugins/pluginname in your file manager. Renaming this folder to pluginname-back should get your site active again.