Hello,
The screenshot that you have shown is on our registration page at https://optiwave.com/register/. The error message is letting you know that account already exists, so you should log-in with that account information here:
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Since you have posted this topic, that means you are already logged in, so you can access and download the evaluations here:
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Or by selecting 30-Day Evaluations from the Downloads menu at the top of every page.
