WAN access via VPN?

Question

VPN

Good afternoon, comrades! There was a need to use the services of a specific Internet provider, which gives access to the Internet through a VPN. Accordingly, the connection is as follows:
a. We connect via Ethernet technology to the provider's internal local network with access to internal network resources.
b. We create a VPN connection without encryption and use the login / password to connect to the VPN, after which there is access to the Internet.
Problem: connecting 2 or more devices. There are 2 machines, OS seven and ten x64. On both, the connection works when the cable is directly plugged into the network. There is also a standard TP-LINK router.
Attempts to organize work:
1.We connect the network cable to the LAN connector of the router. We connect to Wi-FI from the router and immediately get into the local network of the provider. Everything is buzzing, we connect VPN - in any. We got to the 10th page of Google, nothing helps. Directly on the cable - the rules.
2. Well, we decide to connect the cable to the WAN connector of the router. And suddenly magic, the router connected to the VPN !!! We connect to the network that the router distributed, go to cmd and execute ping, all packets go through, we are on the Internet! But the joy was not long, going into the browser, I realized that not a single site opens, just as not a single program can connect (ala Skype, Telegram, etc.), and on the phone it says "Without access to the Internet."
3.Having scratched our turnips, we decide to use the router as a switch, since there are a lot of ports. We crimp the twisted pair and voila - we have physically organized the LAN. And we are trying to connect a VPN on one machine and share the connection to another - it doesn’t work, because the network card is connected to the provider’s internal network, and not our local network. For some reason, sharing vpn via a wireless connection also failed, as well as connecting to VPN under one login / password from two machines (essentially).
How to be in this situation?
ps In attempt 2, through the Google Chrome browser, YouTube and Google worked on one device, on the other everything also pinged, but nothing worked. They turned off firewalls, and antiviruses, and encryption, and set various proxy settings ..

Answer 1

use the 2nd option and add a route to 0.0.0.0/0 via vpn either on the router (for all at once) or on each machine

Answer 2

The router model and connection settings (except for real IPs, logins and passwords, of course, they can be replaced with canoes) to the studio. I came across such providers - these are usually seedy local providers.

Answer 3

SimpleXML to the rescue