no fixed address for 1 year - applying for citizenship

[vcep]

I've had a green card (EB2) for over 5 years and would like to apply for naturalization. However, I have not had a fixed address for over a year.
Can I still apply? What address should I use?

I have been traveling and living in hotels or Airbnbs for between 1 week and 1 month at a time across the country and also some international trips. I have no permanent apartment or house.
I have a P.O. Box that my mail gets forwarded to from my old apartment address (USPS postal forwarding).

Can I use my old address? Although I don't live there, perhaps I'm still considered a resident there -- I'm not a resident anywhere else

Thanks