Hello There,
Thanks for the updates!
1.) Yes I can confirm this that the WP dashboard is displaying a blank screen. Most probably, this is due to a fatal error. Please enable the Debug mode so that we will find out what this error all about. You can do this by opening wp-config.php and adding define( 'WP_DEBUG' , true );
just above /* That's all, stop editing! Happy blogging. */
For example:
define('WP_DEBUG', true);
/* That's all, stop editing! Happy blogging. */
When you revisit the page, you should have some error output describing the issue in more detail.
I have tried your ftp access and I cannot login. The access is correct yet I always get disconnected.
2.) & 3.) This could be related to browser cache.
4.) Have you tried deleting the mobile phone browser cache or use private browsing mode? There is no other reason that I can think off. It must be the browser cache.
Please let us know how it goes.