Login to website generate odd message

Hello Forum

I will open the site http://www.apfeltalk.de/community from 1Password 4 the message in screenshot come.
When I open the site via browser Safari and insert my name and password manuell I have right access.

My name is my email address.
My password is text and numbers.

I use Mac OS X 10.9.4
I use 1Password 4.4.1

What can be the problem?



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