Many times, issues logging in are simply due to using the incorrect credentials for the area you're trying to login to. Listed below are the various types of login information for use with our service, and where each would be used.
"p" Username and Password
This is the default username you will receive with your Private Internet Access account. It is used to log into the Client Control Panel (https://www.privateinternetaccess.com/pages/client-sign-in), and is also used to login to our VPN application, as well as any OpenVPN-based connection type. It is also used within our iOS application.
You can change your password for this set of credentials, via the following link, or via the Client Control Panel directly, as linked above: https://www.privateinternetaccess.com/pages/reset-password
"x-" Username and Password
This is a special username and password for use with mobile or operating system-based setups, such as PPTP and L2TP. It is also used with our SOCKS5 proxy service. This set of credentials must be created manually, which can be done via the Client Control Panel. The following guide explains how to do so step-by-step: https://www.privateinternetaccess.com/pages/client-support/generate-password
The password for this set of credentials can be changed at anytime by logging into the Client Control Panel, and clicking the "Re-generate" button.
Note: There is a known issue with iOS, that causes data that is copy/pasted to become corrupt during entry. To ensure you can login successfully on any iOS setup, please carefully type in your username and password manually.