Unable to access Storefront API access codes

I’m trying to get my API access codes but nothing on the documentation matches what I’m seeing and Live Chat Support were unable to assist me.

I have a dev store made, I’ve made my custom application and installed it. But when I go to Settings > Apps and sales channels > My App. There is no ‘API Credentials’ tab as described in the documentation.

I’m new to Shopify so apologies if this is a dumb question or problem to have but there is no information out there that I’ve found that matches the situation I’m in.