Hi, we also have this problem. We are an OJS instance running 3.4.0.7 and we have about 27 journals. The new DOI-menu works perfectly for everyone, except for one journal. There it is just eternally loading. We have the last version of the ORCiD-plugin, and we do not understand why the DOI-menu does not work for this one journal. In the console we can see this error (which does not show up for the other journals):
This is the message in the error log: “Got error 'PHP message: Exception: The ORCID plugin is enabled, but its settings are invalid. In order to fix, access the plugin settings and try to save the form”
The DOI-menu does not work when the ORCID-plugin is enabled nor when it is disabled. And it was not enabled for this journal originally.