How to connect VPN on all computers in the local network?

Question

VPN

I set up VPN access on a remote router I
connected to it on one computer in my home local network
But for some reason on other computers (on the same local network) when connected to the same VPN, it gives error 619 (something is wrong with the port)
Due to what could it be and how to fix it?
As I understand it, the problem is somewhere on my side, the remote router and vpn definitely work

Answer 1

Perhaps the provider is blocking the GRE protocol .
It is NOT entirely clear whether you are connecting by one login or at the same time to the same login from two computers at once.
It is not clear whether a successful connection is in the local network of the router, and unsuccessful connections from there or outside?
Check that the encryption method is the same. That is, copy all the settings to the tick to other computers.

Answer 2

I connect from the same local network, the provider is the same, but on one computer the connection to the remote VPN passes, on the other it doesn’t. It is unlikely that the
provider blocks the GRE protocol for one computer in the local network, but does not block for another