Login Issues Troubleshooting Guide

Overview

Login issues typically fall into a few categories: ISP/security filtering, security code delivery (2FA), domain/account mismatch, or browser storage/cookie problems. Use the sections below that match what you’re seeing. If you still can’t log in after trying these steps, gather a short screen recording and browser request details to speed up support troubleshooting.

1) “Unable to Log In at This Time” (ISP Blocking)

Some Internet Service Providers (ISPs) and security products block authentication requests using built-in protection features. If you see this error, temporarily disable the relevant protection feature, retry login, then re-enable it after you’re in.

Common ISP/security filters to check

• Verizon Fios — Disable protection in the Verizon dashboard.
• CenturyLink — Turn off Secure Wi-Fi.
• McAfee — Turn off web protection.
• Xfinity — Disable Advanced Security.
• Spectrum — Disable Security Shield.

If you’re using a different ISP

Open your browser’s developer tools and capture the Network request/response during login (or record a short Loom-style video showing it). Sharing that with support helps pinpoint whether a specific request is being blocked or failing.

2) Unable to Send or Receive the Security Code (2FA/OTP)

Check your 2FA phone number

Ask your account admin to confirm your phone number is correct for two-factor authentication. If you are the only admin, you may need support to update your number.

Verify email delivery

Check spam/junk for an email titled “Login Security Code”. If you use a company inbox, confirm internal security tools aren’t quarantining those messages.

Verify Company Relationship Number (if needed)

In some cases, support may request your Company Relationship Number (found under Company Settings) to locate account configuration or validate details.

Check SMTP configuration (if applicable)

If your account uses custom SMTP/email services, confirm the configuration is correct. Misconfigured email services can prevent security code emails from being delivered.

3) “User Does Not Exist in This Account”

This typically happens when logging in through a custom/branded domain that’s connected to a different account (or a different workspace) than the one your user belongs to.

How to fix it

• Confirm the user is added as a team member in the correct BizStackPro account/workspace.
• Verify the login URL matches the correct custom domain for that account.
• If the user belongs to multiple accounts, make sure they’re using the correct workspace URL for the intended account.

4) Page Not Redirecting or Stuck Loading

Enable cookies

Login cannot complete if essential cookies are blocked. Make sure cookies are allowed for your BizStackPro domain and that strict tracking prevention is not blocking required authentication cookies.

Disable VPN or traffic-filtering software

VPNs and some security tools can interfere with redirects and HTTPS requests. Temporarily disable VPN/security filtering and try again.

Verify the secure connection

Click the lock icon in your browser and confirm the SSL certificate looks valid. If the issuer is unfamiliar, the connection may be intercepted by a firewall/security tool.

5) Web Server Returning an Unknown Error

Generic “unknown error” messages during login are often resolved by clearing site data for your BizStackPro domain.

Chrome: Clear site data (DevTools)

1. Open the BizStackPro login page.
2. Right-click anywhere on the page and select Inspect.
3. Open the Application tab.
4. Select Storage in the left menu.
5. Click Clear site data.
6. Refresh the page and try logging in again.

Safari: Clear storage data (Inspector)

1. Enable the Develop Menu: Safari → Settings → Advanced → check Show Develop menu in menu bar.
2. Right-click the login page and choose Inspect Element.
3. Open the Storage section in the inspector.
4. Find the site under Local Storage and remove it (trash icon).
5. Refresh and retry login.

6) Quick Reference: Clear Site Data