wrong rate converted

I have a problem in convert the amount from USD to CAD.

the rates in checkout page not converted well but
I try to convert from $40 USD == must be $ 55.56 CAD .. but it changed to $77 CAD

the URL: attached

Try to check the product page price rate .. then check in the checkout page

list of plugins in website:

3D FlipBook : DearFlip Lite
Checkout Field Editor for WooCommerce
Click to Chat
Compact Audio Player
Disable Comments
Duplicate Page
Duplicator
Elementor
Enable Media Replace
Essential Addons for Elementor
FOX - Currency Switcher Professional for WooCommerce
Image Hotspot - Map Image Annotation
Inactive Logout
Leverage Browser Caching
LiteSpeed Cache
Payment Plugins for Stripe WooCommerce
Really Simple Security
Royal Elementor Addons
Shortcodes Ultimate
Sucuri Security - Auditing, Malware Scanner and Hardening
Temporary Login Without Password
Testimonial Builder
UpdraftPlus - Backup/Restore
WooCommerce
WooCommerce Direct Checkout
WooCommerce PayPal Payments
Wordfence Security
WP File Manager
WPCode Lite
WPForms Lite
WPS Hide Login
YITH WooCommerce Product Add-ons & Extra Options
Yoast SEO

The page I need help with: [log in to see the link]