Hi,
I am also having the similar issue.
I have two instance, one development and other production.
On development WP Member login form page showing the registration link but on production there is only forgot password link.
I have checked everything and all are fine as mentioned in the document. Also all the configuration of the website and server are similar on the both instances.
Don’t know why registration link not appearing on the production? It was working 1 week ago. I have almost spent 3 days in searching of the solution but still not found any. Not getting any type of error anywhere as well.
Please help.