Issues with connecting to code-marketplace from code-server

I followed the documentation as stated over here: https://github.com/coder/code-marketplace/tree/main/helm, ingress is configured and extensions can be added and viewed on code-server. I've tried add/removing extensions with the example provided (Vim) and I've tested using the curl given in Ingress, it works well and I get the response. However on code-server itself, there's an error of "This extension is not signed by the Extension Marketplace", and installation fails as well, as shown in the screenshot. (note that curl in the terminal of the same pod as this code-server works)