You have tripped every anti-fraud and anti-money laundering wire there is to be tripped. The requests are far from ordinary and mean that PennFed suspects that you have supplied fraudulent information. Most likely from a mismatch with the IP address.
If you represent that you live in the the US, you would have US pay stubs which would show US deductions, you would have local utility bills and the like.
All of this has generated a SAR and PennFed's compliance people are now giving you the chance to make it right.
I would forget it before you dig yourself deeper OR come clean.