I have excatly the same problem. Woocommerce report says:
### WooCommerce PayPal Payments ###
Onboarded: ?
Shop country code: SI
WooCommerce currency supported: ?
PayPal card processing available in country: –
Pay Later messaging available in country: –
Webhook status: –
Vault enabled: ?
Logging enabled: –
Reference Transactions: –
Used PayPal Checkout plugin: –
PayPal Quick checkout button is there, but on checkout there is no button to continue payment on PayPal. Latest Woocommerce and WordPress and Plugin version.