A few people were having an error connecting Gravity forms especially with the Host URL
What you have to do is enable the RestAPI on the wordpress site and dont forget to click update
Step 1
Does www.myurl.com/wp-json/ load?
is gf/v2 in there? No
Step 2
In wordpress * Navigate to Forms > Settings > REST API.
- Ensure the REST API option is enabled.
- Generate Public API Key and Private API Key if they’re not already generated.
- Save your changes.