Client Overview
A nonprofit membership organization runs a WordPress membership website for its members. The site had a lightweight tech stack and a simple design, and membership was managed with Paid Memberships Pro.
The Challenge
Members and even administrators were being locked out of the site. The reported problems included:
- Administrators locked out of the WordPress dashboard.
- Members unable to log in even with correct credentials.
- Users repeatedly locked out during login attempts.
- Two-factor authentication (2FA) codes never arriving in inboxes.
- Multiple reCAPTCHA boxes appearing on the login form.
These failures created serious friction for active members, so the organization engaged us for a comprehensive technical audit.
Audit Findings
We identified several underlying issues.
Login and security conflicts
- Hosting-level 2FA and reCAPTCHA: enabled by the hosting provider and conflicting with WordPress based authentication.
- A bundled login-limiting plugin: installed by the host as a must-use plugin that cannot be disabled from the WordPress dashboard. Plugins like this have a history of causing unnecessary login lockouts.
- A copy-protection plugin: incorrectly flagged members who had common browser extensions as suspicious, preventing them from logging in.
- A second security plugin: introduced an additional, duplicate layer of 2FA, creating further conflicts.
Email deliverability
- No SMTP configured: the site relied on the host's default PHP mailer, so 2FA codes and other transactional emails were not reliably delivered to members.
Plugin bloat
- 27 active plugins at the time of the audit. Many were unused or could be replaced with simple custom functions or CSS.
- Residual database tables left behind by previously uninstalled plugins.
Hosting-level caching
- The hosting provider enforced page caching across the site with no option to exclude membership pages, causing session and login inconsistencies.
The Solution
Restoring administrator access
Even administrators were locked out. We regained access by using MySQL to enable a 2FA grace period, bypassing the broken 2FA setup.
Email deliverability
- Configured SMTP for reliable delivery of important system messages such as login and password-reset emails.
- Recommended Brevo as a cost-effective option, since its free plan covers a few hundred emails per day, which was sufficient here.
- Suggested AuthSMTP or AWS SES as scalable alternatives for future growth.
Login and security fixes
- Disabled the bundled login-limiting plugin at the file-system level, via the must-use plugins folder.
- Removed unnecessary security layers from the copy-protection and second security plugins.
- Streamlined the 2FA and reCAPTCHA setup to eliminate duplication.
Plugin audit and optimization
- Reduced active plugins from 27 to 19 without losing functionality.
- Cleaned up residual database tables.
- Replaced plugin-based features with lightweight custom code where appropriate.
The Results
- Admin login restored: administrators can freely access the WordPress backend again.
- Member login restored: members can log in seamlessly with valid credentials.
- Transactional emails delivered reliably: 2FA codes, password resets, and membership emails now reach inboxes.
- Performance improvements: backend and frontend performance stabilized.
- Plugin optimization: a 30% reduction in plugin count while maintaining full functionality.
- Future-ready infrastructure: the site is set up to run smoothly for years, with a clear path for scaling email as the membership grows.
Summary
The root cause of the membership access problems was a combination of conflicting security plugins, missing SMTP configuration, and restrictive hosting-level settings. Through a comprehensive audit, plugin cleanup, and reconfiguration of the email and login systems, we resolved every major issue. The organization can now manage its membership operations confidently and give members a smooth, frustration-free experience.
FAQ: membership site login problems
Why are members getting locked out of my WordPress membership site?
Common causes include conflicting security plugins, hosting-level 2FA or reCAPTCHA that clashes with WordPress login, missing SMTP so 2FA and reset emails never arrive, and aggressive caching that is not excluded for logged-in pages.
Can hosting-level security settings break WordPress logins?
Yes. Host-forced two-factor authentication and reCAPTCHA, and login-limiting plugins bundled as must-use plugins, can conflict with WordPress authentication and lock out both members and administrators.
How do you fix 2FA codes that are not being delivered?
Configure proper SMTP for transactional email instead of relying on the host's default PHP mailer. Services like Brevo, AuthSMTP, or AWS SES deliver 2FA codes and password resets reliably.
Reviewed by Vic Dorfman, founder of MemberFix, WordPress membership site experts with 10+ years building, migrating, and maintaining membership sites. Last reviewed: July 2026.
* All identifying information in this case study has been anonymized to protect client confidentiality and intellectual property, at the client's request.
