Email - Bad Request

I am trying to email an invoice to my customer (checked the email address and it’s correct), and I get an error message that reads, "The remote server returned an error: (400) Bad Request.
What gives?

Several users have found that updating to the latest Manager edition has resolved some email issues.

Thank you!
Where in the app (I’m using the desktop version on my computer) do I go to update?

Update from the top of the Forum home page

I’m sorry to be an idiot, but I don’t see what I am supposed to do. I have a tab open for https://forum.manager.io/, but I don’t see where to go or what to click. Can you be a little more specific? Sorry and thank you.

Top left corner where it says “Desktop Edition” click there

OK. I see that. Do I hit Free Download even though I already have the software on my PC? Does the Free Download act the same as an update?

Yes

That resolved the problem. Thank you for your help.