Wordfence causing 503 errors | WordPress.org

Dear Wordfence,
I make use of Hostinger, and my customers are unable to login?
First I struggled with the reCaptcha function, had to disable that.
And now our resources are being overloaded.
Luckily the client made contact and I could manually assist his ordering process, what am I to do here?

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