Using wp single login you can easily add the functionality to allow only single login per user.
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Slick Popup: Contact Form 7 Popup Plugin
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ilGhera Danea Exporter for WooCommerce
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Sticky CTA – Sticky Floating Notification bar, Buttons, Call To Action A/B Testing
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MaxSlider
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Joinchat – Enhanced "click to chat"
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AM Events
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Custom Sidebars – Dynamic Sidebar Classic Widget Area Manager
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SitePush
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WP Mobile Menu – The Mobile-Friendly Responsive Menu
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Shabbat Zman Widget
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PT Variants
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Fusion Page Builder
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No Right Click Images
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Smart Post – Post Grid, Post Carousel, Post Slider Gutenberg Blocks for Blog & News
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PiWeb Product Enquiry or product catalog for WooCommerce
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6amTech – Payment Gateway for bKash and WC
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Feeds for Pinterest – Showcase Boards and Pins on Your Site
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Campaign Monitor Dual Registration
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Ajax add to cart for WooCommerce
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SKT Addons for Elementor