Hi Joyce!  

Is this happening with emails or Client Tasks?  You may want to also check if your email server/host was down for a period of time.  Your best bet is to reach out to Karbon’s Support team when these things happen so they can help you troubleshoot right away!

Hi Joyce! The Karbon support team is really great at solving issues like this right away. Have you tried chatting with them?

You can find the chat support by clicking on help on the left sidebar and then by clicking here (screenshot below):