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You can now select from two, different, ways of authentication:
IMS/IDMcompatible one (this is the same way you use while accessing ims.euro-fusion.org) -Login with Garching AD- EUROfusion Software Stack account (e.g. gitlab.eufus.psnc.pl) - here you can use your login details once you had your account created.
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It is not required to have a dedicated EUROfusion Software Stack account. However, if you do have EUROfusion Software Stack account it is advised to link it with IMS/IDM account. You can read about this step by following the link. The easiest way to check whether you have ESS account or not is to reset your password. If you already have an account associated with your e-mail, a link for reseting the password will be sent to this account. You can simply ignore it.
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If you already have IMS/IDM account you can use Active Directory at IPP to login to Gitlab/JIRA/Confluence. Make sure to select Login with Garching AD and provide login details as stated below.
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