User cannot log from Algeria

I am using Okta for my SPA auth, everything works great but when users from African countries, like Algeria, they can sign up, but they are never able to sign in. I checked the logs and the reports and nothing shows up there. I wonder if this is because I am using the developer account? the incidents aren’t even reported. I tried many things like adding a new zone to my policy but this did not fix the issue. Besides that, login from mobiles never works :>)