How to resolve errors when registering Personal Visual Prolog 7.5?

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sudo rm -rf /2019-03-14 10:26:53

Prolog

sudo rm -rf /, 2019-03-14 10:26:53

I study at one of the Far Eastern technical universities. We use Visual Prolog 7.5 [although it was 5.2 a year ago].
When registering a product of the public version of Personal , there were problems: after filling out the form on the site, a key for version 9 of the software is sent to the mail, and it is not suitable for activation 7.5.
I wrote to the mail ([email protected]) - they are silent, and returning to hell 5.2 is a last resort ... Tell me
, good people, how to get the coveted key?
In Google, everything and everyone advises the official method of registration.