openplanet.nl domain

Hello,

I would like to know whether the openplanet.nl website can be trusted but it is detected as dangerous by bitdefender. I tried to submit the false positive form a while ago (just sent another one), but the webpage is still blocked.

The owner of this website asked me whether I had info from bitdefender about why this domain is blocked, but I cannot find any information in the software nor in the browser.

How can I find more precise info please?

Regards.