VMware has released Hotfix 1 for vRealize automation 7.6. This has many fixes, for issues with vRealize Automaiton 7.6.
See the VMware KB here: https://kb.vmware.com/s/article/70911
Update July 4, 2019: It back online again.
Update July 3, 2019: It looks like VMware har removed the KB, I will update when it’s online again.