When registering on DigitalOcean, the promo code does not work, what should I do?

Question

DigitalOcean

I’m listening to a radio di podcast and wanted to use a promo code to get $ 100 on my balance after registration, I’ll try to enter a promo code, but it’s no longer active, and I realized that the new releases have already updated conditions, you need to follow the link.

How to get a bonus?
Is there any other promo code?
Or what to do now to get