I have created a sandbox account, and am attempting to authenticate by following the instructions here: https://dev.freeagent.com/docs/quick_start
When I click on Authorize APIs within the Google Oauth 2.0 Playground, I get redirected to https://login.sandbox.freeagent.com/sessions
When I enter my sandbox login and password, i am informed that:
The email and password you entered were incorrect
However I am entering the details associated with my SandBox account, and which I have confirmed and am able to login with to dev.freeagent.com/login
Is anyone able to advise what the issue is here?
Name of Sandbox App: Test Paymo Integration