Hi there,
Thank you for reaching out, and I apologize for any inconvenience caused by this oversight. Category functions are removed in version 5. You mentioned the margin issue. Can you mark down your screenshot? And share your site URL to check the issue. Or you can share a screencast video.
Filter your pages that you need.
https://prnt.sc/_czfZfMBNlad
Can you give me administrator access to check the section saving issue?
I appreciate your cooperation and will ensure to get back to you as soon as possible.
Best regards,
Toufiqur Rahman (Team Lead, Support)