Help with exporting booklet and pagination

Hello, I have an brochure almost ready, it only needs to be prepared and exported for print.

But I have a problem with Print Booklet function. It seems to be bugged, important parts are greyed out and when used, it makes a mess.

So I need to manually rearrange pages for print. But I have problem with pagination. Basically, if I rearrange pages, the numbering is going to change and numbers of pages will be all over the place.

How do I lock these page numbers to existing pages? So it doesn't change, when rearranging pages?

Thanks for every answer.