I am also trying to install a Lodgify Search Box on the home page of a new site:
https://pinantanlakeresort.squarespace.com
password: pinantan
I added the code from lodgify into a code block.
The block appears just fine but when entering details and selecting the search button nothing happens. I disabled all added css code on the site and it still didn't work.
I also created a new trial site as a test, added the same code block, and it worked just fine.
Any idea what the problem could be?
**UPDATE**
I discovered it's a javascript code I added to the Footer code injection. It works fine if I remove the added code. I hope that helps someone encountering the same issue.