If you’re looking for some help, it’s important to provide as much context as possible so that people are able to assist you. Try to always mention:
installed ghost v2.22.1 plesk server on node js 8.11
everything works, but I can’t configure zapier. can’t get admin api. As far as I understand, it is received through “add custom integration”? but I don’t have one, there’s an empty field below.
Looking at your screenshot it appears that you are on a much older version, it definitely doesn’t look like you are on Ghost 2.22.1, if you were your integrations screen would look like this: