Use something else for 2fa not email. I used to use keepass for 2fa on my laptop and phone, but now I’m using ente auth. It’s convenient because I can login ente auth anywhere and get a code but the only thing is you’ll need to remember 2 passwords which is worth it imo.

Open a document and hold down on the page number then drag it to the position you want

If you’re talking about OSS scanner documents, you can add pages anytime.