Constant freezing with latest update of Endnote for Mac

My Endnote for Mac constantly freezes, including when downloading references, opening PDF’s attached to references and synching with my online account. I have 580 references in Endnote.

I’m using MacOs 10.13.3 and Endnote X8.2 (Bld13302) and Word 16.9.1

In addition, I cannot see references in my online account. The groups and number of references in each group show in the sidebar but the screen contains no references.

Any help would be appreciated.