itsmydata report for internationals

I've been looking for an apartment in Nürnberg using wg-gesucht as I'll be coming to Germany for my masters in September. It says that I need to send a credit report from itsmydata to the people who put up the ads/offers. When I go for the international Bonitaetspass on their website, it asks me to chose one of the few countries' flags at the bottom. The thing is, I'm not from one of those countries. What can I do? I'm so confused right now.