Yep, facebook can detect multiple account users.. The best thing to do is using different ID for every mail and not just add numbers in the end, same goes for the name
Few of my accounts got banned cause i've simply added 1,2,3 n so on in the end of the mails and used same PW.
They won't even look up into your account if you used different mails.
Nordeus can't help ya to unblock your team.. sadlly, the only way to is to verify it.