The placeholders remain as I added them. They don't summon information

Hello.

Placeholders appear as text in e-mail, footer and in templates. where should I check. I will be glad if you help.

For example when I add the following placeholders; without any change; In the email, in the template, and at the bottom, they appear as text. They do not create links. Or they don’t call and write the existing e-mail.

[UNSUBSCRIBEURL]

[UNSUBSCRIBE]

[MAIL]

[E-MAIL]

Yours truly…