1. Add stripe secret key to 'Plugins' -> 'Stripe Express' as 'Bearer sk_test_blabla'. And stripe client id.
2. Attach an action 'Stripe Express Signup' to your button (like 'Link your bank account')

*Also, do not forget to fill all required fields for this actions. (Redirect URL, Business type, Email address & Stripe client_id)

3. Add a new event that will monitor redirect url query params

Add event -> 'General' -> 'Do when condition is true' -> Set 'Run this' to every time -> Set 'Only when' to 'Get data from page URL is not empty' -> Set 'Parameter name' to 'code'

4. Add the 'Create New Account' action to our previous event and pass in a code parameter a 'Get data from page URL' value, like we did in a step 3.

5. After that you will be able to use 'Get Account Info' & 'Delete account' actions with stripe_user_id

6. Add a redirect URI in stripe settings 'Redirects' (at the bottom)
https://dashboard.stripe.com/test/settings/connect

A short video tutorial - https://youtu.be/W2ecMm7blfk