JNEKG

Your AOS invoice will be issued shortly. Your DS230 invoice will only be issued once you DS3032 has been accepted. Did you. Give the operator both email addresses? Petitioner and beneficiary?
Unfortunately at this point, you just have to wait. Get your packets ready to send. Check everything three times over.
All the best

Don't stress. It's a false checklist and it most likely means you AOS package has been accepted. Don't worry about it. No action needed.

Like pushbrk has said, you need to show you are trying to reestablish domicile. Here are some suggestions:
1. Get a family member or friend to write a letter stating you will reside with them upon your return until you find your own place
2. Register to vote (which you can do abroad)
3. Open a bank account (or at least attempt to) from OS. Or better still, if you still have a bank account but no card attached to it, transfer USD funds to that account.
Failing these things, you may need to return prior to your husband. Then this domicile issue will be closed.
Best of luck.

This seems very strange to me. Seems like yore gave more than enough evidence to prove domicile. My husband (USC) has never lived in the US for more than 6 months and we were able to prove domicile.
What address did you put on I864?
Did you add a cover letter written by you explaining the situation?
We had to prove re-establishment of domicile but it appears you have enough ties to the US to prove your return. Where will you reside upon your return?
Perhaps it's best to get on the phone and speak to a supervisor at NVC. I am sure if they look at what you provided they will be able to tell you what else you need.
Sorry I couldn't be more helpful. All the best.