Toolbox not loading

Dear sir/madam,

When I click Litespeed > Toolbox in the Wordpress admin panel it keeps loading. All the other functions and my website are fast. But everytime I open the Toolbox I get a 503 timeout. Very weird.

What is wrong?

Many thanks in advance!

PS: Would love to see a solution asap. If it brings costs with it, I don't mind to pay. I am in a hurry. Thanks!

Kind regards,

Robin Buren