Update: The below guide is only applicable to Salesflare's old COM Outlook add-in, not to the currently available add-in installed through Outlook's app store.
In some cases, there might be something wrong in your cache.
Cache in the Outlook plug-in can be quite persistent and introduce errors.
Here’s how to clear it:
Go to C:\Users\[username]\AppData\Local\Salesflare\cache where your username is the Windows username with which you are logged on.
Delete everything in the folder.
Restart Outlook
Log on to Salesflare again.
If your issues have not been solved after going through this process, talk to us on the live chat.