If you’re using a specific board, try to leave that field blank and see if that works. Could have been a temporary problem on Pinterest’s end as well
Amanda I had the same issue. it happens when your boards on Pinterest have two or more words… instead of spaces you must use a dash
I.e. Boards names “My Ideas” (capitalized) will have to be written My-Ideas in the plugin with the exact capital letters where they occurr and a dash per space
cheers
Thanks for chiming in saphira1969, that would definitely cause the issue as well.