Alex

> Can SiteLock affect this? if it something like CloudFlare - yes.

@Badarosk0 https://www.paypal-community.com/t5/PayPal-Reporting/IPN-Failing-with-Fatal-Failure/td-p/2840623/page/2 looks like paypal problem, but no information about fixes

@Badarosk0 this is not hack detect problem anyway, it wont verify transaction since paypal returns fatal error instead of "ok" status.

https://github.com/rathena/FluxCP/commit/cfd294c751b119f1c90dac1bab4efe723c88a6bf (older version with **global_reg_value** tables also available https://github.com/sanasol/sanasol/blob/master/paid_addons/fluxcp_credits_to_cashpoints/secret.patch) Replacement for flux credits to #CASHPOINTS Should be still actual probably. But not sure about herc/rathena variables database now.

Probably your server IP address is suspicious for PayPal. Google said that User-Agent header parameter can help sometimes. Add here https://github.com/rathena/FluxCP/blob/4ea0eef562d824e5032ae9c31c7bc3c854e0e869/lib/Flux/PaymentNotifyRequest.php#L399 ``` ... $request .= 'Content-Length: '.strlen($qString)."\r\n"; $request .= "User-Agent:...

Looks like ipn domain changed Can someone try it? sandbox domain ``` 'PayPalIpnUrl' => 'ipnpb.sandbox.paypal.com' ``` production ``` 'PayPalIpnUrl' => 'ipnpb.paypal.com' ```

It shouldnt open like it, serves only POST requests.

tested on sandbox url too, loaded good and payment done

@OptimusM try new paypal domains too.

@Azael-Dev Your site is local, it wont work... Paypal should send notification to your site.