Hi Ville,
welcome to the Apple (user-to-user) Community.
Re: "Log in problem? Forgotten answers to security questions"
As most people are using two-factor authorisation now, not many accounts will still have security questions.
Below is a link to Apple Support's archived article:
What to do If you’ve forgotten the answers to your Apple ID security questions – Apple Support
If this helps you recover your account, you may want to update it to the newer authentication method:
To check if two-factor authentication is available in your country:
Availability of two-factor authentication for Apple ID – Apple Support
Two-factor authentication for Apple ID - Apple Support
More info:
Manage two-factor authentication for your Apple ID from iPhone – Apple Support
or
Verification code - how to get one and sign in with two-factor authentication.
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There's a process you might want to try if you still have no access to your Apple ID account:
You may regain access after an account recovery waiting period:
How to use account recovery when you can’t reset your Apple ID password – Apple Support
More Support if needed:
Apple ID Support Team Web-Page:
NB: There is a "Get support" link at the bottom
Apple ID — Official Apple Support
or
See a list of Apple phone numbers around the world
Contact Apple for support and service - Apple Support
All the best :-)