Recaptcha v3 doesn't always work on Angular. What could be the reason for this?

Question

Angular

What could be the reason why the captcha works every other time?
I see the following error.
Moreover, I have authorization from two places - from the login + password form and in another place - by pressing the "Demo mode" button.
Moreover, in the login + password form, everything always works, and when you try to press a button and log in in test mode, it writes an error. But not always. I do not understand what it is connected with.

ERROR Error: Invalid site key or not loaded in api.js: null
            at Array.<anonymous> (recaptcha__uk.js:384)
            at recaptcha__uk.js:30
            at ReCaptchaService.execute (angular-recaptcha3.js?7188:53)
            at LoginService.demoLogIn (login.service.ts?1df9:131)
            at IorderDescriptionSectionComponent.demoLogin (iorder-description-section.component.ts?e047:17)
            at IorderDescriptionSectionComponent_Template_button_click_17_listener (template.html:23)
            at executeListenerWithErrorHandling (core.js?7d7a:15279)
            at wrapListenerIn_markDirtyAndPreventDefault (core.js?7d7a:15317)
            at HTMLButtonElement.eval (platform-browser.js?8e13:592)
            at ZoneDelegate.invokeTask (zone.js?d135:421)

I use this library

import { ReCaptchaService } from 'angular-recaptcha3';

everything works 100% in the form of entering a password and then receiving a token.
But in another place, when I click the "Enter in demo mode" button, I also want to get a token, but it doesn't work here. More precisely, it can work, but for a reason unknown to me, or if I "put" the data in the password entry form - it may seem nonsense, but as if when the form is dirty, the captcha will always work, although I press the button in a different place for the Demo mode .
What can be done here and how to solve it?