flexi auth - A user authentication library for CodeIgniter

[eluser]GeWeDo[/eluser]
Dear All

I have installed Flexi Auth on a Shared Hosting and is working good:
- With All Browsers (except IE) when opened from a Laptop
- With iPhone 4S
- With Chrome on iPAD

But NOT WORKING with:
- Safari on iPAD
- Internet Explorer 9

PROBLEM: Login do not work

I also tried the demo version from your site to open in Safari on iPAD and it also do not open.

Any solution ?

Regards