Hey there tarahkelly24 👋
We definitely don't want you losing your mind, especially on a Friday! Let's get you back on the emailing track. We normally find that errors sending invoices can occur when the "reply-to" email is not set (this lets your customers email you back!).
If you head to More > Invoice settings > Invoice emails, do you see an email address added in there? If not, pop one in and you'll be ready to rock and roll!
It's possible you might be discussing a different issue though, so please let me know if I'm on the wrong track - pop a screenshot here (minus any private details) and we can zero in on what the issue is ☺️
And if you get extra stuck, you can always reach out to us via More > Digital assistant in the Solo app to be directly connected with me and the team!