Cline connetion to OpenAI OAuth

I have been using my OpenAI subscription through Cline for almost 6 months now but it suddenly stopped working.

Things that haven't worked so far:

Logging out, restart vs code and login again

Start a new task.

Change model being used ( 5.3, 5.2, 5.4)

Disable MCP

I look forward to suggestions to how I can fix this or if it's only me facing this issue as well