For almost a month now, I have been unable to add items to my folders using doi numbers. I've checked everything - but continue to get "Zotero could not find a record for the specified identifier. Please verify the identifier and try again" message. I've uninstalled, re-installed, updated, checked translators... everything I can think of. I AM still able to add items using the PubMed identifiers, but not all of my articles appear in PubMed. What am I doing wrong?
https://s3.amazonaws.com/zotero.org/images/forums/u14574730/4w5a0sxctuyosmokzxta.png