Thank you all for your answers, it turned out was not the last sysupgrade, because the shaking of the cap
https://openwrt.org/toh/tp-link/archer_c2_ac750. made further instructions on everything in the logs of all good, but the sites but there was no access and no (
I am attaching a piece of log
Thu Sep 20 17:54:50 2018 daemon.notice netifd: Interface 'antizapret' is enabled
Thu Sep 20 17:54:50 2018 daemon.notice netifd: Network device 'tun0' link is up
Thu Sep 20 17:54:50 2018 daemon.notice netifd: Interface 'antizapret' has link connectivity
Thu Sep 20 17:54:50 2018 daemon.notice netifd: Interface 'antizapret' is setting up now
Thu Sep 20 17:54:50 2018 daemon.notice netifd: Interface 'antizapret' is now up
Thu Sep 20 17:54:50 2018 daemon.notice openvpn (antizapret) [1131]: TUN / TAP device tun0 opened
Thu Sep 20 17:54:50 2018 daemon.notice openvpn (antizapret) [1131]: do_ifconfig, tt->did_ifconfig_ipv6_setup = 0
Thu Sep 20 17:54:50 2018 daemon.notice openvpn (antizapret) [1131]: / sbin / ifconfig tun0 192.168.104.27 netmask 255.255.252.0 mtu 1500 broadcast 192.168.107.255
Thu Sep 20 17:54:51 2018 user.notice firewall: Reloading firewall due to ifup of antizapret (tun0)
Thu Sep 20 17:54:52 2018 daemon.warn openvpn (antizapret) [1131]: WARNING: this configuration may cache passwords in memory - use the auth-nocache option to prevent this
Thu Sep 20 17:54:52 2018 daemon.notice openvpn (antizapret) [1131]: Initialization Sequence Completed