Dissolved company with an ipostal1 mailbox

I’m curious if anyone has encountered this issue before. My partner and I have dissolved our LLC, and I’m interested in canceling my postal1 account. What happens to my mail after the dissolution? Most of it is junk mail, but if the IRS or someone important sends a letter to my virtual address, I’d like to receive it. Is there a way to change the address? It’s not possible to do it through the post office like a regular address change, I have already tried that.

Thanks!