This is not really an answer. You are saying, that you offer 3 methods of generating the key but you must use the Verisign app or Physical key card if you want to pay for something on the mobile site. Why even offer the SMS option if it is not going to work on all version of your site. The Full desktop site works fine for SMS key, but mobile does not give the option to send the key code to sms. Please fix or just show the full site on phones and tablets.
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