https error with vpn connection

Hello

I’m a rookie here :slight_smile: Sorry if my question is obvious and i’m not a native speaker
my system is:
RB962UiGS-5HacT2HnT
6.37.1 stable

My system is working without problems. I have a VPN paid acces witch is working perfectly almost one year ago on my laptop with an OpenVPN windows client. Yesterday i set up the openvpn client in the mikrotik. Following this guide
https://support.hidemyass.com/hc/en-us/articles/204558497-Mikrotik-Client-Setup
The vpn connection and the router working fine except one thing. Impossible to open some https site. Not all just some. Like disqus.com or http://stackoverflow.com/ but google.com working fine
i was tested with my phone and tablet and different browsers of course.
Any idea?
thx

c’mon guys really no idea?

I was adjust the MTU, check the traceroute, terminal. everthing reachable except one thing i get this browser page:
err_connection_reset

and found this topics here in this forum (without any answer):
http://forum.mikrotik.com/t/err-connection-reset-err-empty-response/84481/1

Does your firewall contain a line for drop invalid packets ? Whats the Bytes / packet count for it ?

yes i have this rule
the current state is:
55.9 KIB 1168 packet
i just disabled this rule and the problem is still present.
I disabled all extra firewall rules except the quick setup default rules
when i open one of the non-working sites the invalid packet counter doesn’t increasing