I use a plugin called Mailster, because after extensive research it was literally the only newsletter plugin that would load third-party resources on the dashboard in WordPress.
Mailster has several misspellings on the dashboard widget showing subscribers:
Woha! Looks like you havn’t sent any campaign yet!
I believe it is meant to say something along the lines of:
Whoa! Looks like you haven’t sent any campaigns yet!
I would tell the producers of Mailster, but I can’t find a way to contact them without signing into their customer portal, and the experience is notable. I’d rather report it here, in public on a good website, rather than search for credentials to a customer funnel. Woha!