hi hem, i got a problem on this mod,

i set global reward points for my products, and i set award points for new accounts (points added to earned), then i did a test, create account i got points earned, buy something i got points pending, everything seemed to work fine.

but then, when other customers created accounts and placed orders on my site, weird things happened, 10 custormers created accounts, only 3 customers got points earned. 5 customers placed orders, only 1 customer got points pending (this customer chose wire transfer, the other 4 customers chose paypal and got no points pending or earned).

is it the normal problem? is there anything i missed? what do i fix this problem?