I have perpetual license. How to get the promotion?

[CalypsoArt]

I am still completely confused. I have a Perpetual license for 2020. I've got a promotion email from Trimble that says:

As our M&S program comes to an end, you’ve got two options:
• Get the first two years of a SketchUp Pro Subscription for just $240 (a $358 savings!) and access every feature update past, present, and future.
• Update your current perpetual license before November 4 to access SketchUp Pro 2021 when it’s released.

However, the I can find no way to access that promotion of $240. The "subscribe" button take me to a page with the full charge for two years. The is no code or additional info provided. anyone know about this?

[sketch3d.de]

why not simply ask Trimble directly in their official forum or by contact form?

[Dave R]

The discount is applied when you enter the e-mail associated with your SketchUp account.