I don’t think I received the account details, you should be able to post them here as a private reply. In the meantime …
Connections is now more multisite aware. Please try adding the following to the wp-config.php file:
This will tell Connections to run in single-site mode on a multisite install which is basically how it was running before. After you add this, things should be back to normal and it also should be upgrade safe. Meaning you’ll only have to do this once.