I am unable to sign up at your newest service, Acrobat.com. I am using my own domain and have an e-mail address like m@tt.com (just an example). Your sign up form always tells me that I have to write user@domain, which is what I do hundred of times. My domain sure exists as well as my mail address.
Your Tech support was not very nice, after 4 days I got a standard reply that the tech support is not responsible and that I have to contact customer care. I still think it's a technical problem with the form.
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