502 When Getting Access Token

Hi Iā€™m brand new to postman (and Okta) and Iā€™m trying to get an Access Token. Iā€™m on the VPN thatā€™s required as well.
Whenever I send my get request (using basic Auth) I get a 502 bad gateway.
Iā€™ve tried toggling each and every setting on and off (after reading a few artciles and forums posts here). Hereā€™s just a few Iā€™ve tried

  • Enable SSL certificate verification
  • Automatically follow redirects
  • Follow original HTTP Method
  • Follow Authorization header
  • Disable cookie jar

I donā€™t know if it matters/is related but in the Developer ā†’ DevTools (current view/shell) it mentions 2 other errors

  1. vendor-shared.js:1201595 Refused to load the script ā€˜https://js.stripe.com/v3ā€™ because it violates the following Content Security Policy directive: ā€œscript-src ā€˜selfā€™ ā€˜unsafe-evalā€™ā€. Note that ā€˜script-src-elemā€™ was not explicitly set, so ā€˜script-srcā€™ is used as a fallback.
  2. sentry-app.postmanlaā€¦&sentry_version=7:1 Failed to load resource: the server responded with a status of 429 (TOO MANY REQUESTS)

Iā€™ve also tried both the web version and the desktop app to see if it affected anything.

How do I resolve this?