Unable to Login into the iPhone Mobile App

The error you’re experiencing when trying to connect your WordPress site to the WordPress iPhone App can be due to several reasons, but a common one is indeed related to XML-RPC. XML-RPC is a remote procedure call protocol that enables external applications like the WordPress app to communicate with your WordPress site. Here’s how you can troubleshoot and potentially resolve this issue:

1. Check XML-RPC Functionality:

• To verify if XML-RPC is functioning on your WordPress site, you can use an online tool like the XML-RPC Validator. Enter your site’s URL and see if it can detect the XML-RPC endpoint (xmlrpc.php).
• If the validator indicates that XML-RPC is disabled, that might be the root cause of your issue.

• Enable/Disable XML-RPC through .htaccess:

• To Enable: If XML-RPC is disabled, you can enable it by editing your .htaccess file. Make sure there are no rules in this file that specifically block xmlrpc.php.
• To Disable: Conversely, if you want to disable XML-RPC for security reasons (though this would prevent the app from connecting), you can add the following lines to your .htaccess file:

• <Files xmlrpc.php> order deny,allow deny from all </Files>
• You can edit the .htaccess file through an FTP client or the file manager in your hosting control panel.

Check for Plugin Conflicts:

• Some security plugins can block XML-RPC. Check if you have any security plugins installed that might be doing this.
• Although you mentioned that the Yoast plugin previously had an option to manage this, it’s not typically a feature of Yoast SEO. Double-check if there might be another plugin responsible for this setting.

Contact Hosting Provider:

• Since your hosting is with Namecheap, it’s worth reaching out to their support team. They can confirm whether they have any server-side restrictions affecting XML-RPC functionality.

Additional Checks:

• Ensure your WordPress site’s URL is entered correctly in the app. It’s a common mistake to have typos in the URL.
• Verify that your website is publicly accessible and not in maintenance mode or blocked via .htaccess for IP-specific access.

Update App and iOS:

• Although you mentioned you’re using up-to-date versions, it’s always good to double-check for any pending updates for the WordPress app or your iOS, as this can sometimes resolve compatibility issues.

It seems like there is a misbehaving bit of code somewhere on your site.
 
If you go here
 
https://whereispillmythoughts.com/xmlrpc.php 

… you’ll see a blank page, which suggests that some plugin, theme, or your wp-config.php file has conflicting code in the file. You are supposed to see a message saying “XML-RPC server accepts POST requests only.” 
 
This problem is similar to the “Headers already sent” problem. More information on that is here:
 
https://wordpress.org/documentation/article/faq-troubleshooting/#how-do-i-solve-the-headers-already-sent-warning-problem
 
Can you check your wp-config.php file, theme files, and plugins for conflicting code?
 
Once you’ve fixed the code causing the blank page, your XML-RPC should look exactly like this:
 
https://jetpack.com/xmlrpc.php

Also, please note that support in this forum is for users who have difficulties with the WordPress mobile app.

Should you need assistance with the Akismet Anti Spam plugin, please post a question and/or search for answers in the Akismet forum: https://wordpress.org/support/plugin/akismet/.

• This reply was modified 2 weeks, 6 days ago by thabotswana (a11n).

Can you contact your web host and check to see if they’re blocking or otherwise limiting incoming and outgoing connections over XML-RPC?

The app uses this file to communicate with your site, but some hosts block connection requests to that file. When I run some tests on your site, it appears you may have some form of rate-limiting that will interfere with how the app works with your site. The app needs unlimited access to this file to be able to upload content to your site from the app.