Hello I have this webiste www.liiklusinfo.ee and it's basically designed to work on web browsers, but is it possible to see that map on an Android mobile-phone? I can see that it is possible, because http://kraater.eu/en/map shows up on my android phone, but why isn't my website showing up? When I open the page, it states that I must get a new API code, but I have all the right API keys..
It's definitely due to the fact that you are using Maps API v2 instead of v3.
"http://maps.google.com/maps?file=api&v=2&hl=en&sensor=false&key=ABQIAAAAzrzbFLxHQWFbTQr9PqQ_HhRwAQ6CP1ccuJFaeFcXqlGX2NtZ2xQSe3YINEpjxiDi-m_GSubdYtbMEg">
V2 is causing some issues which is preventing v3 from loading. You may be able to find the route of those problems, but it would just be easier to switch to v3.
I would recommend reading this guide:
http://blogs.missouristate.edu/web/2010/05/12/google-maps-api-v3-developing-for-mobile-devices/