Is there not a place where you can send it to?
I would call them tmw morning.
Or another option is (if you want to test it now), while it sounds a little confusing,
create another account, which is easy, requests your account a letter. (no fee for letter writers so it should be easy, you don't pay money to just make an account).
In that way, you can see instruction/w/e that writers get to see.
See if there is an mailing option for it with an address.
I've done it before because I wanted to make sure my requests were getting sent.
Does that make sense??
But i don't think waiting till 9 in the morning is that big of a deal...
I think there is an option of mailing but I think the writer has to do it.
So, did you see the letter??