Multiple countif question

[Dashiz]

Hello guys, I have question for my following issue:

I'm trying to figure out the amount of emails registered from each email domain by month, the information I have is Column A the dates of creating (for example(01/01/13))
and in column B I the emails ex (john@gmail.com, richard@hotmail.com, kitcat@gmail.com, etc), this is the COUNTIFS I've been trying: =COUNTIFS($P$6:$Q$9, F$8, L8:L11, K8) where $P$6:$Q$9, is an extra table I made for detaching the email handle from the domain which goes something like this: =RIGHT(C3,LEN(C3)-FIND("@",C3)) and L8:L11 corr to an extra month table that I also made it goes something like =MONTH(A#) . Whoever I'm getting a value error with =COUNTIFS($P$6:$Q$9, F$8, L8:L11, K8) , without the second criteria I get results but only by edom and doesn't take in consideration the months.
Any tips? Thank you guys!

 

[barry houdini]

COUNTIFS needs to have all ranges the same dimensions, so you need to only use column P or Q like, for example

=COUNTIFS($P$6:$P$9, F$8, L6:L9, K8)

If you have domains in both columns then perhaps try

=COUNTIFS($P$6:$P$9, F$8, L6:L9, K8)+COUNTIFS($Q$6:$Q$9, F$8, L6:L9, K8)