Paypal button not responding

Click links to a paypal page, so I deduce gateway is PayFlow Link. In WooCommerce interface I see Paypal Standard.

Changes are reverted as I need the store running, here is status:

WC Version: 2.5.5
Log Directory Writable: ✔ /home/en/public_html/admin/wp/wp-content/uploads/sites/4/wc-logs/
WP Version: 4.5.3
WP Multisite: ✔
WP Memory Limit: 256 MB
WP Debug Mode: –
Language: en_US
Server Environment
Server Info: Apache
PHP Version: 5.3.3 – We recommend a minimum PHP version of 5.4. See: How to update your PHP version
PHP Post Max Size: 8 MB
PHP Time Limit: 600
PHP Max Input Vars: 1000
SUHOSIN Installed: –
MySQL Version: 5.1.73
Max Upload Size: 1 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✕ Your server does not have the SoapClient class enabled – some gateway plugins which use SOAP may not work as expected.
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔
Database
WC Database Version: 2.5.5
woocommerce_sessions ✔
woocommerce_api_keys ✔
woocommerce_attribute_taxonomies ✔
woocommerce_termmeta ✔
woocommerce_downloadable_product_permissions ✔
woocommerce_order_items ✔
woocommerce_order_itemmeta ✔
woocommerce_tax_rates ✔
woocommerce_tax_rate_locations ✔
Active Plugins (11)
Breadcrumb NavXT by John Havlik – 5.4.0
Cr3ativ Carousel Plugin by Jonathan Atkinson – 1.3.0
Creativ Shortcodes by Jonathan Atkinson – 1.0.4
WooCommerce Google Analytics Integration by WooThemes – 1.4.0
WooCommerce by WooThemes – 2.5.5
WP Updates Notifier by Scott Cariss – 1.4.3
W3 Total Cache by Frederick Townes – 0.9.4.1
iThemes Security by iThemes – 5.6.0

Settings
Force SSL: –
Currency USD ($)
Currency Position left
Thousand Separator ,
Decimal Separator .
Number of Decimals 2
API
API Enabled: ✔
API Version: 3.1.0
WC Pages
Shop Base: Page not set
Cart: #1229 – /cart/
Checkout: #1229 – /cart/
My Account: #1231 – /my-account/
Taxonomies
Product Types: external (external), grouped (grouped), simple (simple), variable (variable)
Theme
Name:
Version: 1.2
Author URL:
Child Theme: ✕ – If you’re modifying WooCommerce on a parent theme you didn’t build personally, then we recommend using a child theme. See: How to create a child theme
WooCommerce Support: ✔
Templates
Overrides (WooCommerce): be2-wp/woocommerce/archive-product.php,
be2-wp/woocommerce/cart/cart-empty.php,
be2-wp/woocommerce/cart/cart-totals.php,
be2-wp/woocommerce/cart/cart.php version 2.3.0 is out of date. The core version is 2.3.8,
be2-wp/woocommerce/checkout/cart-errors.php version 1.6.4 is out of date. The core version is 2.4.0,
be2-wp/woocommerce/checkout/form-billing.php,
be2-wp/woocommerce/checkout/form-checkout.php,
be2-wp/woocommerce/checkout/form-coupon.php,
be2-wp/woocommerce/checkout/form-login.php,
be2-wp/woocommerce/checkout/form-pay.php version 1.6.4 is out of date. The core version is 2.5.0,
be2-wp/woocommerce/checkout/form-shipping.php version 2.1.2 is out of date. The core version is 2.2.0,
be2-wp/woocommerce/checkout/payment.php version 2.3.0 is out of date. The core version is 2.5.0,
be2-wp/woocommerce/checkout/review-order.php,
be2-wp/woocommerce/checkout/thankyou.php,
be2-wp/woocommerce/content-product.php version 1.6.4 is out of date. The core version is 2.5.0,
be2-wp/woocommerce/content-single-product.php,
be2-wp/woocommerce/notices/error.php,
be2-wp/woocommerce/notices/success.php,
be2-wp/woocommerce/single-product.php

I tested the plugin with a default theme and works fine. However, with my custom theme as I said, proceed to paypal button is just not responding, and replacing cart.min.js with one from version I use now fixes the thing…

Update:
if I delete cart.min.js, works just fine!

yes, I “inherited” a custom theme that has to be used.
Thank you for quick resposes anyway!

yes, as i said beffore, i tried another theme (storefront) and everything works just good. So it was clear issue is in the theme I use, just had no idea where to search for the issue.