This issue is not so easy to describe precisely, so try to check if:
1. you cannot use Advanced layer editor nowhere
2. you cannot use Advanced layer editor but some other logged-in used can do
3. you cannot use Advanced layer editor on pages
4. you cannot use Advanced layer editor on posts
5. you cannot use Advanced layer editor on perfolio items
For me it was issue just for some users and on pages only. But with original help of “ifthenllc” I´ve solved it correctly.
In database in table “…_usermeta” I´ve added missing row with ‘meta-box-order_page’ settings as copy of working setting of other user but with appropriate ‘user_id’, because of my issues of No.3 of my list above :)

Thank you “ifthenllc”