I wrote too many times a wrong PIN.
I did contact wdc.coinmine.pl when the support was accessible, I still don't have any answer after a few days.
Now, I can't even contact them because the support link on the pool's website is gone.
My account is still locked with more than 60 WDC on it.
I have same problem, contacted the admin.
Let's see if i can get a response.
PS: My account got unlocked. tnx admin.