I have two Pi 3Bs that have been running as VPN hosts for two years now. I ssh in about once a month to verify that updates are applied, and they've just worke

I have two Pi 3Bs that have been running as VPN hosts for two years now. I ssh in about once a month to verify that updates are applied, and they've just worked without a problem. Where I've had problems with other Pis has mostly come down to power supplies that don't deliver enough power. Getting a properly sized power supply will likely solve a lot of your issues.