Not sure how to make this work

I have a similar scenario as saintmulligan.

I have a rails website, which I’ve configured for json login.

I am creating a wordpress website. I would like to have a “single sign-on”, so that users who have signed on (and are cookied) on my rails site can access the wordpress site
(eventually to post as well as to read posts).

I am investigating using this plugin, along with another plugin to limit reader — Ive been looking at this https://www.ads-software.com/plugins/restricted-site-access/

So far, I’ve installed and filled out the settings for RESTful Single Sign-On Plugin,
but I don’t see it doing anything happening. I don’t see any requests goint to my rails server when I log in or post, and using wp-login.php still uses the wordpress logins, not my rails logins.

I am not an expert in wordpress, or PHP. I looked in the apache logs and don’t see anything relevant.

My sites are running locally right now, but I can push the test out if that would help.

Maybe I’m misunderstanding what this plugin does, or maybe I’ve not configured it correctly.

Here are my settings:
Authentication Endpoint https://localhost:5001/auth/login
Password Reset Endpoint (blank)
Authenticated Resource user
Resource Username email
Resource Password password
Resource Email email
Resource First Name first_name
Resource Last Name last_name
Response Error Property error
Authorization Cookie nysci-wp.dev (my local wordpress. I tried chang
Cookie Domain nysci-wp.dev (I tried localhost:5001 as well)
Current User Info URL localhost:5001/auth/edit (this may not be right but I don’t think we are getting this far)

https://www.ads-software.com/plugins/wp-restful-single-sign-on/