Button generate Key not show

in my user I can not find the entry api access and the button to generate the token. I also own the role of system manager. Can anyone help me??
Thanks a lot.
Best Regards

Don’t you see this?

yes, I don’t see this section “Api Access” and the button “Generate Keys”.
could you give me a solution about it ?

Do you have all roles and all module checked?

yes, i have all roles and all modules checked

Do you have some way to resolve this problem ?