Hi there!
Thanks for reaching out.
The access you have shared is not letting me open the site module, named 'Contact us menu button'. Please check the screenshot below:
https://share.cleanshot.com/fYd38jPf
Kindly check how your contact us binded to the SPPB page. If the SPPB page is not published in a menu item, then you need to add it to a menu item. It can be hidden if you wish. After that you will get a good looking URL. Just replace the link in the module.
Hope it will solve the issue for you.
Best Regards