disappearing phpmyadmin

I recently had a user request access to phpmyadmin on a site. I tested using url domain.tld/phpmyadmin. The url was rewritten as domain.tld/phpmyadmin/?/phpmyadmin and the phpmyadmin login doesn’t show up, rather the front page of the main site appears. I updated to the most recent version of phpmyadmin to no avail.

Ideas? Diagnostics I can run?