An error occurred. Email sending

Dear Support Team!

I’m a new user, so I don’t know almost anything,

I checked email form to contact me, and it says “an error occurred”.
I already tried several things, that helped other people, but for my page error is still there, and I do not know why.

Thank You in advance, have a good day,
Jekaterina

The page I need help with: [log in to see the link]