@Marvin_S Hi, I was tested everything, which doesn't explain why same SIM is working with two other devices. It's looks like TP Link has problem with tunnel connections, especially with VPN...

Hi @Marvin_S the ISP is T-Mobile (PL)

Hello everyone, I have come to you with a problem that I cannot solve or find a logical explanation as to why it is not working. I have three routers from different manufacturers TP-Link, Zyxcel,...