Works for me on IE and win 10, but not Chrome (with UBlock) on the same machine.
Intersting. Just tried IE in a VM and I get an error where the form should be:
This page can’t be displayed
•Make sure that the web address
http://web-ma.metabo.com is correct.
•Look for the page with your search engine.
•Refresh the page in a few minutes
Looks like an insecure form that the browsers are blocking.