Fix: Log in to WordPress iOS App (XML-RPC methods missing)

If you are getting the error above this article might help you.

Prerequisites

In order for this to work this must be true:

You’re using Digital Ocean.
You install WordPress with the one-click installer.
You receive the following error trying to log in to your blog via the WordPress iOS app: Couldn't connect. Required XML-RPC methods are missing on the server

Solution

1. Enter to your droplet using SSH

ssh root@YOUR-IP

2. Disable xml-rpm.php block

Run this commands:

# to disable the configuration that blocks xmlrpc
a2disconf block-xmlrpc
# to restart the server
systemctl reload apache2

a2disconf disables block-xmlrpc.conf that redirects requests to /xmlrpc.php into the home page.
To block xml-rpm again run a2enconf block-xmlrpc and restart the server again. More info on ubuntu manuals.
ubuntu manuals

To verify:

In incognito mode, enter to https://your-site.com/xmlrpc.php it should display the following message: XML-RPC server accepts POST requests only.
Use XML-RPC troubleshooter to validate that XML-RPC is available in your side.

3. Log in into the iOS App writing “www.your-side.com”

For some reason the only way I could log in into my WordPress side was by appending www into the url. For example, instead of writing soydev.mx I had to write www.soydev.mx and that did the trick.

CLOSE THE WORDPRESS APP and open it again.(see note below)
Write your side with www. For example: www.soydev.mx and press “Continue”
You should see the next screen asking for your username and password.

note If I didn’t close the app sometimes I get this error on the “username and password” screen. Close the app in order to avoid it.

Conclusion

I hope you are able to log in into the WordPress iOS app after this. If you had any trouble tweet to @WordpressiOS and copy me @hidalgofdz.

Sources

The solution was proposed in this thread on Digital Ocean community.
The XML-RPC troubleshooter is recommended here in an (I think) old Automattic knowledge base.