Woocommerce showing two registration fields?

Question

WordPress

Problem with Woocommerce
When trying to pay for a product, it offers registration and displays two fields with a login/password.
Previously, I only displayed one with a suggestion to enter a password. Now it outputs both. Checkmarks all where it was possible to disable - continues to display. There are no caching plugins.
I replaced the woocommerce files with the original ones, replaced the templates with the original ones, changed the theme, disabled all the plugins in order - it still displays two login forms.
Disabled registration by default in wordpress. Does not help.
WC Version: 2.5.2
WP Version: 4.4.2
Plugins:
Ajax Search Lite
All In One SEO Pack
Bootstrap one page woocommerce checkout
Contact Form 7
DD Last Viewed
Fast Gallery
Featured Post with thumbnail
FooGallery Owl Carousel Template
Login Logo
PHP Code for posts
Post Content Shortcodes
Pricing Table by Supsystic
Redirection
Saphali Woocommerce Russian
Shortcodes
Video Thumbnails
Widget Importer & Exporter
WooCommerce Membership
WooCommerce
Wordfence Security
WordPress Importer
WordPress Database Backup
WP-Recall