Why doesn't l2tp vpn work for me on linux mint?

Question

linux

I decided to try Linux, because the laptop is already old and does not take out Windows 10, I settled on linux mint, but for work I need the l2tp vpn protocol, as it turned out, it is not here by default, I had to google, I used this guide https:// www.tecmint.com/setup-l2tp-ipsec-vpn-clien... . After installing and rebooting, the protocol appeared to be created, but when I try to connect, it tells me that the VPN service has stopped working.

Answer 1

everything seems to be correct in the instructions
, something dumb is happening,
I set it up for the beeline,
double-check the logins, passwords and what domain is used there