I am using WP 4.9.1 and have two wordpress installs on subdomains within the same root domain. I want our users, who have profiles on one of the installs to be automatically logged into the other install when they log into the first one.
I have followed the instructions on this thread Single sign on between two wordpress website
Then I followed the additional instructions on this thread How Access Multiple Wordpress sites with a single login
I feel like I am very close to getting this working properly, but what is happening now is: when I attempt to log into either install, it just refreshes the login page and doesn't go anywhere. There are no error messages displayed anywhere, including inspect console.
I am thinking I must be missing one step somewhere. Can anyone help? If possible, I would be willing to share the files I have customized in email so someone can review them for mistakes.
Any help will be appreciated.