I filed a change of address by printing and filling out a I-865 form and mailing it by certified mail a month ago.
I followed these instructions: https://www.uscis.gov/i-865 - and sent it to the correct service center.
Today I get mail from USCIS and it turns out they sent it back with a boilerplate letter basically saying "the information you seek is available online blah blah" and that "the Vermont service center will continue to accept paper correspondence for [a limited set of forms of which I-865 is not included]"
But there's no way to file the i-865 online. The instructions specifically say to print it and mail it to the service center corresponding to your location.
On the other hand, it shows the right address on the letterhead, and there was no forwarding label on the envelope. So it seems they know my new address.
What gives? USCIS can be so irritating.