Charging for paypal is not compatible with PayPal policy.
Details: PayPal User Agreement, > “4.6 No Surcharges”.
https://www.paypal.com/webapps/mpp/ua/useragreement-full?country.x=US&locale.x=en_US#4
Apart from that have you tested with other payment gateway?
What version of the plugin are you using? What theme are you using?
mpbm23,thanks for your reply, but you misunderstood me.
Obviously,it’s still working for paypal. because my another VPS working well with paypal charge. they both have the same wordpress data, because I copied one from another copy.
the wordpress: 4.22, plugin: 1.3.5
sorry, i forgot to confirm only not works on paypal, other payment way is ok.
You have exactly the same theme in both?
Can you enable debug mode?
yes. exactly same. because I’ve tested it on the first VPS, it works. then when I move it to another VPS, it stops working only paypal charge, other payment gateway still works.
any way, my problem has been fixed. If you have the old version v1.2, you will find it works well on wordpress 4.2.2 and woocommerce 2.3.