My non profit group recently upgraded to a business account. I had no problems connecting before we upgraded. I can see that I am a member of the group but I do not have access to our folders. The other people on this account are not experiencing these issues. I went through a series of steps given my the dropbox team to identify if there was an issue with my computer settings and there did not seem to be. I still cannot access any folders, either through the app on my computer or online directly.