Getting the same thing, in the Zephyr Scale plugin for Jenkins, trying to add a Jira instance.
I'm running Jira v8.13.4 on prem with a new user on the jira local directory. The user is an administrator. This is in Jenkins setup before you even specify a project, so it's likely not a project thing.
The error message is not helpful "Invalid credentials." I've double checked the username and password.
BTW, I am evaluating Zephyr Scale for approximately 1000 user license purchase. Please help.
jfelix ,did you get a solution to posted query, as I am also facing the same. User account has super administrator permission and Zephyr scale is enabled at project level.i am using sever based jira instance to connect
