Why doesn't the groups.leave api method work when calling the key received by the stadlione application when redirecting to your site?

Question

API

I do authorization through
oauth.vk.com/authorize?client_id=id&redirect_uri=blank.html
gives the key then I try the groups.leave method works.
Then I try through a redirect to my site
oauth.vk.com/authorize?client_id=id&redirect_uri=site.ru despite the fact that it
gives the key to a trusted url, then I try
groups.leave does not work. What's the matter?
Error
{"error":{"error_code":15,"error_msg":"Access denied: no access to call this method","request_params":[{"key":"group_id","value":"57 "},{"key":"v","value":"5.103"},{"key":"method","value":"groups.leave"},{"key":"