---> That can't be true, I've been using VPN with this modem for 3+ years and I have 0 problems. Perhaps my configuration is different than everyone else's, but I've never experienced this issue using VPN with this modem
I suspect the problem occurs with Windows-based systems.
No problems on my Win 10 PC. I've been using a VPN to connect to work for many years, for as long as I've had the T3200M.
My VPN is connecting fine through the T3200M. Computers and phones can all connect to the VPN I use.
@Linux-Is-Ransomware-Free which VPN do you use?
Only the best - ProtonVPN
Where I can use passwords 100+ (base 94) characters in length (which, for mine, I change weekly) and have the option of single or dual-layer global servers through which to connect.
Check them out and see how their dual-layer servers exponentially secure one's connection.
Also, I don't set mine up in the gateway - that exposes my VPN settings to prying Telus (admin) eyes - instead, I set mine up per device, which creates encryption from end-to-end - that way, there's no possibility of MITM. Like I said, I change my PW (and username) weekly, it's hard to hit a moving target.