I've tried to import our Basecamp 3 data into Projects but have received the following email. I have even tried to do it one more time and the result was the same. Could you please check our logs to find out the reason behind this issue?

I've checked our Basecamp plan and there wasn't any statement about 3. party connection or data migration limitations. I did not try to use an Admin account though but I don't think that this could be the reason for this problem.

---

1. An error occurred while authenticating with Basecamp.
   
2. An error occurred while reading your data.
   
3. Your Basecamp plan doesn't support data migration.
   
4. There was a problem contacting the Basecamp servers.