Now, with nothing changed but taking this function out and back again, it seems to be working. Strange is the inconsistent behaviour:

- Sometimes it behaves case-sensitive, sometimes not.

- There seems to be a higher probability of mismatch when you press enter instead of clicking the send button.

Thanks for your report,

I'll check this and make a fix if necessary.

I've seen in your other post that you had issues with the admin section too. Are you sure that your PHP settings are ok on the server?

Thank you!

Thanks. I am working with an external provider (Quality Hosting), so I cannot check and control the settings on my own (exception: PHP version, which I changed from 4 to 5).