How to pay for University of Helsinki course

[Avidreader]

I just completedthis quick course called Me and my cat on the url below. The website is kind of funky, just sign up with the same email you used for Xamk and/or if you have taken other Moocs at Helsinki. At the end of the course, you refresh the page and a link appears that redirects you back to the Helsinki university to formally register it.
The course is very fun for cat lovers and only takes an hour. You fill out a questionnaire about your cat's breed, age, personality, behavior issues and any information about when they were kittens during the socialization window. They talk about the science of cat behavior which is very basic and for all ages. Then they ask the owner to do a self assessed personality quiz and compare your traits with the average cat owner. There are 4 graded multiple choice questionnaire exercises that can be redone until you get everything right. Worth 2 university credits if you pay 30 euros, otherwise the completion certification is free.

There is also a dog course called Me and my dog. There is supposed to be an English version, it seems hidden. You'd have to do what I did with the cat course, sign up with your email and the system seems to redirect you to the English version of the course.

https://courses.mooc.fi/org/uh-veterinar...and-my-cat
https://courses.mooc.fi/org/uh-veterinar...ja-koirani

My question is how is the 30 Euro paid because they mention in a window a Finnish bank, but I don't think I see other payment options. Thanks!