Is this website incompatible with with 1password

Hi joisagile​! I'm sorry to hear you're seeing a filling issue on the website you shared.

From a quick test I was also able to fill a test credential as AJCxZ0 mentioned. To help investigate further, I'd like to ask which browser you were using, the steps you usually take to autofill, and to share a little bit more about the behavior you're currently seeing. Thanks!