After processing your payment you will see the corresponding message on the registration confirmation page.
After that, you should go for a ride.
You need to ride no less than indicated in each challenge.
Please, try to challenge yourself and ride as far as you can. But make it for fun.
Record your ride, and publish it on Strava as public activity and put the hashtag #RideForUkraine in the title.
On the registration confirmation page, you can submit a link to your ride for review.
After review, you will be eligible for getting a prize - a pin.