Here’s what consumers have asked with answers from Howrse staff and previous consumers.
You can't. There is no customer service number, and administrators don't have the authority or access to deal with most issues. All you can do is send an email to Ubisoft and hope you get a response sometime in the next decade.
Legit company, but their account recovery and other game features are a joke.
Howrse WAS a fun, easily advancable website that allowed me to collect certain items in the game that I liked.