Wrong price on mobile

Hello,

My webstore is located at https://www.altgames.eu
There is one product (though later today I will probably add more products). The desktop version of the website states the correct price: 49,95 including 21% tax. However, if I go to the webstore on my iPhone, it shows the price excluding tax (but it says the price is including VAT).

I have set up woocommerce to show the prices including VAT.

My woocommerce status report:

### WordPress Environment ###

Home URL: http://www.altgames.eu
Site URL: http://www.altgames.eu
WC Version: 3.1.1
Log Directory Writable: ✔
WP Version: 4.8
WP Multisite: –
WP Memory Limit: 2 GB
WP Debug Mode: –
WP Cron: ✔
Language: nl_NL

### Server Environment ###

Server Info: Apache
PHP Version: 7.0.21
PHP Post Max Size: 250 MB
PHP Time Limit: 180
PHP Max Input Vars: 12000
cURL Version: 7.38.0
OpenSSL/1.0.1t

SUHOSIN Installed: –
Max Upload Size: 250 MB
Default Timezone is UTC: ✔
fsockopen/cURL: ✔
SoapClient: ✔
DOMDocument: ✔
GZip: ✔
Multibyte String: ✔
Remote Post: ✔
Remote Get: ✔

### Database ###

WC Database Version: 3.1.1
WC Database Prefix: 0cj1D_
woocommerce_sessions: ✔
woocommerce_api_keys: ✔
woocommerce_attribute_taxonomies: ✔
woocommerce_downloadable_product_permissions: ✔
woocommerce_order_items: ✔
woocommerce_order_itemmeta: ✔
woocommerce_tax_rates: ✔
woocommerce_tax_rate_locations: ✔
woocommerce_shipping_zones: ✔
woocommerce_shipping_zone_locations: ✔
woocommerce_shipping_zone_methods: ✔
woocommerce_payment_tokens: ✔
woocommerce_payment_tokenmeta: ✔

### Security ###

Secure connection (HTTPS): ❌Jouw winkel gebruikt geen HTTPS. Leer meer over HTTPS en SSL-certificaten.
Hide errors from visitors: ✔

### Active Plugins (7) ###

Jetpack door WordPress.com: door Automattic – 5.1
Mollie Payments for WooCommerce: door Mollie – 2.6.0
YouTube WD: door WebDorado – 1.0.12
WooCommerce Cart Tab: door jameskoster – 1.1.1
WooCommerce PDF Invoices & Packing Slips: door Ewout Fernhout – 1.6.6
WooCommerce: door Automattic – 3.1.1
YITH Pre-Order for WooCommerce: door YITHEMES – 1.1.2

### Settings ###

API Enabled: –
Force SSL: –
Currency: EUR (€)
Currency Position: left
Thousand Separator: .
Decimal Separator: ,
Number of Decimals: 2
Taxonomies: Product Types: external (external)
grouped (grouped)
simple (simple)
variable (variable)

Taxonomies: Product Visibility: exclude-from-catalog (exclude-from-catalog)
exclude-from-search (exclude-from-search)
featured (featured)
outofstock (outofstock)
rated-1 (rated-1)
rated-2 (rated-2)
rated-3 (rated-3)
rated-4 (rated-4)
rated-5 (rated-5)

### WC Pages ###

Winkelbasis: #4 - /
Winkelmand: ❌ De pagina moet als Openbaar zijn ingesteld
Afrekenen: ❌ De pagina moet als Openbaar zijn ingesteld
Mijn account: #7 - /mijn-account/

### Theme ###

Name: Storefront
Version: 2.2.4
Author URL: https://woocommerce.com/
Child Theme: ❌ – Als je wijzigingen aanbrengt in WooCommerce of in een hoofdthema dat je niet zelf gebouwd hebt
raden we het gebruik van een child thema aan. Zie: Hoe maak je een child thema

WooCommerce Support: ✔

### Templates ###

Overrides: –