@woozle many thanks for your answer ! Yes, in the motherboard of the PC A, the WOL is enabled. So ok, I will try to follow this article (https://www.tp-link.com/us/support/faq/2156/) to configure...

@woozle I edited the OpenVPN config file (added there Public IP from Huawei ONT) and now OpenVPN client is connected on my remote computer! It's great ! Thanks !! By just typing "192.168.100.4" in...

@woozle Many thanks for your help ! I configured the port forwarding on Huawei ONT, then on Router Archer A6 I generated a certificate again in OpenVPN server tab, then exported the config file....

@woozle sorry, there is a button Add to expand the interface here, here is the whole settings :

@woozle I have such menu - Forward Rules -> Port Mapping Configuration. I'm not sure here - in "Internal Host" field I have to set 192.168.100.4 ? There is even a scrolling menu and Archer A6 is in...

@woozle Yes on the status page of Huawei ONT (Status > WAN Information) there is a public IP.