@Nik33
a) They fixed the processing issue in 6 business days after I contacted. The ETA at the time was 10 business days. If that's still the current ETA, since it's past that, I would try to follow up with them. Maybe try calling; here are phone numbers: https://developer.apple.com/support/worldwide-telephone-hours/
b) I checked my signed W-9 and I have my LLC name there, so I guess I figured that's what should go there anyway. I selected Limited Liability Company – Disregarded Entity and used my EIN, not SSN.