New users are best starting from scratch rather than trying to troubleshoot. 95% of the issues reported are due to skipping steps and not reading the user guides correctly.
If you have previously connected an account or already installed this pack or you tried to install and had issue then choose the “Reconnect Account” option as you may require an account clean up first.
If you have already set up and are using your doc and have connection breakages or need to fix a connection without deleting your doc and losing data then “Repair Account” is the best option.