I really don't like the lack of movement for WAC cases in 21XXX, 22XXX, 23XXX and 24XXX ranges yesterday and today.
My thoughts on possible scenarios:
1. WAC taking a time to regroup and continue adjudicating cases
2. WAC adjuticating other cases (older or newer), putting these ranges on hold
3. WAC decided to completely forget about I-751s now that 48 month extensions were announced
4. There is an IT issue affecting their ability to adjudicate cases
Will try watching it closely for few days.
If no movement in mid March (for any cases in these ranges), I will consider filing N-400.