Error with Legacy License Generator

I keep getting an error trying to generate a legacy license for quartus. I am following an old textbook, which uses Quartus II 7.1 and would really like to work with this particular version.

This is the URL I am trying to use to generate a legacy license.

URL: https://www.altera.com/support/support-resources/download/licensing/lic-choose.html

It takes my Mac address and asks for an email. Then, gives this (not very helpful) error:

[h=2]Altera Software Subscription Licenses[/h]Sorry. There were errors encountered during the license generation.

Please click here (https://www.altera.com/support/support-resources/download/licensing/lic-choose.html) to re-submit your request.

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Any help would be much appreciated. I tried contacting support but have not had a resolution yet.