Getting the error after activating the plugin

[nnadeemm]

As i activate the plugin and enter the required settings, this is what i get the attached error at my login page.

http://prntscr.com/fuqexi

[batguyz]

In your Azure dashboard, do you have the correct URI?

[nnadeemm]

Here is what are my settings http://prntscr.com/fusg57

after getting around it variously here is what new error says http://prntscr.com/fusgp0

[batguyz]

Using the sign-up or sign-in policies, in the reply url use your domainname/b2c-token-verification Try to run that

[mjwowpa]

Same problem: error 404; even with "/b2c-token-verification" in reply.