Plugin causes “headers already sent” / blocks WP login

Hi,

After installing/updating to version 5.0 (a month ago), this plugin’s main file began sending output from the very first line, which triggered repeated PHP “headers already sent” warnings.

In WordPress, this blocks login cookies and redirects — in our case it prevented access to /wp-admin entirely. Our host’s support team traced the issue directly to this plugin and confirmed removing it restored normal login functionality.

Environment:

• Plugin version: 5.0
• WordPress: 7.1
• PHP: 7.4+ (per plugin requirements)

Could you take a look at the plugin’s initialization code for any output (whitespace, echo, print, etc.) happening before headers are sent? Happy to provide further detail if useful.

Thanks