I’ve successfully used this plugin on two sites. On the third I get the same error mentioned above. If I use either of the other two accounts, it works fine. I’ve set it to remove data, deactivated, uninstalled, reinstalled—still it doesn’t work. I’m using 2.3.1. I’m using no other Constant Contact integration or software. I’ve tried this on a WordPresss default install and it’s still a problem for the account I’m trying (works fine for the previous two). Now what?
