Nuxt auth does not seem to use refresh token correctly when dealing with an Elixir backend

[ivan-rivera]

I have a Phoenix backend and my authentication is handled by Pow. To make sure that everything is working correctly, I configured my token to expire in 15 seconds and I successfully tested it manually. When I log in with my Nuxt client, I get logged out after 15 seconds. Interestingly, I can see a token renewal call being made just before I get logged out. Either way, the renewal part does not seem to be working correctly and the problem seems to be on the frontend. I have the following configs in my nuxt.config.js

router: {
    middleware: ['auth'],
  },

  auth: {
    localStorage: false,
    watchLoggedIn: true,
    redirect: {
      login: '/',
      logout: '/',
      home: '/account',
    },
    strategies: {
      cookie: {
        cookie: {
          name: 'XSRF-TOKEN',
        },
        endpoints: {
          csrf: {
            url: '',
          },
        },
      },
      local: {
        scheme: 'refresh',
        token: {
          property: 'data.access_token',
          maxAge: 15,
          type: '',
        },
        refreshToken: {
          property: 'data.refresh_token',
          maxAge: 60 * 60 * 24 * 30,
          type: '',
        },
        endpoints: {
          login: { url: '/session', method: 'post' },
          logout: { url: '/session', method: 'delete' },
          refresh: { url: '/session/renew', method: 'post' },
          user: { url: '/user', method: 'get', propertyName: 'user' },
        },
      },
    },
  },

Can anyone help me work out what could be wrong here?

Many thanks :)