Generated API key not working to install InfusionSoft WordPress Plugin

Wanting install/activate several InfusionSoft plugins on my WordPress site. I got my App Name and API key, but WordPress says it can’t connect.

Depending on the plugin, you sometimes have to use a portion of your app name …
For example, if your app name is AB123.Infusionsoft.com, some plugins require you to only use AB123, while others require AB123.Infusionsoft.com and yet others require https://AB123.infusionsoft.com.

Try those three methods and see if they connect.

Jeff