Authenticating using Webapp

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trying ti authenticate from salesforce using the below URLs through webapp using the client Id and secretsand updated the callback URI in the app .

Authorize Endpoint URL|https://identity.company-information.service.gov.uk/oauth/authorize|

|Token Endpoint URL|https://identity.company-information.service.gov.uk/oauth2/token|

navigating to companies house page

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If you still can’t find what you’re looking for email enquiries@companieshouse.gov.uk

but the status is still saying Pending. can u please guide us what we are missing ?